SmartExpert
$30/per page/Negotiable
ENV 101 Environmental science Sophia Course
Click below link for Answer
1
Which of the following is the best example of how a government agency can apply environmental science?
•
Provide mosquito netting for malaria-stricken areas.
•
Purchase only free-range, organic chicken.
•
Study the decline in honeybee populations around the world.
•
Regulate air emissions from a coal factory.
CONCEPT
Applying Environmental Science
2
Match the graph image below with its corresponding type and common use.
•
Line graph in which data is depicted by using horizontal or vertical bars.
•
Scatter plot in which data is depicted by using individual dots for data points.
•
Line graph in which data is depicted by using a line connecting data points.
•
Scatter plot in which data is depicted by using images to represent values.
CONCEPT
Graphic Literacy
3
Which of the following is an example of environmental ethics?
•
A facility cleans wastewater in a way that does not use harmful chemicals.
•
A school replaces incandescent bulbs with LED bulbs.
•
An individual believes that nature and animals have intrinsic value.
•
Volunteers meet monthly to pick up trash at the park.
CONCEPT
Ethics and Stewardship
4
Which of the following describes an effect of overfishing experienced at the individual level?
•
A chain of restaurants along the coast begins to lose business.
•
A fish experiences hormone imbalances from water pollution.
•
A fish species becomes extinct.
•
A fisherman loses his livelihood.
CONCEPT
Time, Scale, and Impact
5
Ecosystems provide many benefits to humans, which are termed "ecosystem services." Visiting the Grand Canyon on a school field trip is an example of a (A) cultural service that ecosystems can provide.
A
supporting provisioning cultural regulating
CONCEPT
Biodiversity
6
Jocelyn is making a chronological list of the events that occurred to create early life.
1. Inorganic molecules joined to form complex organic molecules.
2. Once encased in a membrane, these molecules began to replicate themselves.
3. __________.
4. One type of metabolism led to the production of oxygen.
5. Prokaryotes formed interdependent relationships to create eukaryotes.
6. Eukaryotes led to different cell types performing different tasks.
•
Lightning in a water environment led to photosynthesis.
•
Some prokaryotes joined together: one protected and one provided energy.
•
Called prokaryotes, the organisms developed the ability to metabolize.
•
Water subsided from certain areas of the planet, allowing plants to adapt to land.
CONCEPT
Early Life
7
Which statement about projected human population growth below is incorrect?
•
Innovation and technology have little influence on projected population growth.
•
The population in 2050 will reach 10 billion if growth continues to increase.
•
If population growth dramatically slows, the Earth's population will be 7.4 billion by 2050.
•
Continuing to slow the growth at current rates will result in a population of 8.9 billion by mid-century.
CONCEPT
The Impact of Population Growth
8
Choose the sentence that describes Thomas Malthus and his contributions to environmental awareness.
•
He was the first chief of the United States Forest System and served from 1905 until 1910.
•
He wrote the book The Population Bomb, in which he discussed the negative effects of human population growth.
•
His book Silent Spring, published in 1962, raised public awareness of harmful agricultural practices.
•
He wrote “An Essay on the Principle of Population,” published in 1798, that warned of the dangers of human overpopulation.
CONCEPT
Environmentalism
9
Plant and animal life faced many challenges when moving from water to land.
Select the FALSE statement about this transition.
•
Organisms had to adapt in order to reproduce on land.
•
Plant and animal life experienced increased effects of gravity on land.
•
Plant and animal life suffered from a lack of consistent sunlight on land.
•
Organisms tended to dry out upon moving to land.
CONCEPT
Early Life
10
Select the statement that describes a scientific theory.
•
A concept that cannot be tested.
•
A universal rule that does not change over time.
•
An abstract idea that changes constantly.
•
A concept that can be supported but not proven.
CONCEPT
Science & The Scientific Process
11
Select the date and time of human arrival according to the one-year calendar model based on the Big Bang theory.
•
December 30, 11:59 PM
•
December 15, 11:55 PM
•
December 31, 11:54 PM
•
December 1, 12:00 AM
CONCEPT
Earth's Formation
12
The Industrial Revolution was a factor in a global population explosion because as population increased, cities and their infrastructures grew.
Select one statement that is NOT a result of this change.
•
Energy was more readily available in cities.
•
New forms of transportation led to a new mobility for citizens.
•
Improved food production fed more people.
•
Clean water became less accessible.
CONCEPT
Human Arrival and Expansion
13
Which of the following is NOT a major impact of population growth?
•
Air and water pollution and climate change
•
The thinning of the ozone layer allowing harmful radiation to reach Earth
•
The degradation of habitat and the loss of species
•
Increased need for energy leading to depletion of natural resources
CONCEPT
The Impact of Population Growth
14
Select the item below that is biotic.
•
Air
•
Bacteria
•
Dirt
•
Water
CONCEPT
Environmental Science
15
“Deforestation of the rainforest is mainly due to clear-cutting for agriculture and the harvesting of hardwoods. Most of the clear-cutting is for the purpose of creating grazing land for livestock, which can be linked to the global demand for red meat."
Which of the following is the most likely source for this quotation?
•
A popular magazine because it's a mixture of data and personal testimony
•
A news show because it’s a combination of opinion, data, and speculation
•
A politician because it’s a general statement and includes personal opinion
•
A scientist because the language is scientific and does not include opinion or bias
CONCEPT
Scientific Literacy
16
Select the misleading graph.
•
•
•
•
CONCEPT
Graphs in Environmental Science
17
Which statement is true about human population growth?
•
Population was 200 million people for most of history.
•
Human population doubled between the years 1900 and 1950.
•
World population has experienced continuous growth since 8000 BC.
•
In 1800, there were 1 billion people on Earth.
CONCEPT
Human Arrival and Expansion
18
Most scientists believe the event that led to the extinction of the dinosaurs was caused by a(n) __________.
•
super nova
•
volcanic eruption
•
asteroid impact
•
massive tidal wave
CONCEPT
Continental Drift and Major Extinctions
19
Choose the statement below that is NOT true about early Earth's atmosphere.
•
Conditions were favorable for forming chemical bonds.
•
Both ammonia and methane were present.
•
The ozone layer was quite thick.
•
There was no free oxygen.
CONCEPT
Earth's Formation
20
“All organisms share biological requirements for survival and well-being, and all should be respected equally.”
The quotation represents a(n) __________ environmental ethical position.
•
Anthropocentric
•
Ethnocentric
•
Ecocentric
•
Biocentric
CONCEPT
Ethics and Stewardship
21
Choose the best explanation of the distinction between environmental science and environmentalism from the options below.
•
Environmental science holds that humans have a responsibility to be aware of their impact on the environment, and environmentalism is a social movement that urges action.
•
Environmental science remains objective, while environmentalism is concerned with ethical questions about right and wrong concerning the environment.
•
Environmental science is dedicated to protecting the environment while environmentalists concentrate on the legal, political, and social ways to do so.
•
Environmental science is a subjective examination of human interactions with the environment, and environmentalism is an objective assessment of how humans relate to the environment.
CONCEPT
Environmentalism
22
Select the statement that correctly defines biodiversity.
•
Protects the environment in ways that can continue indefinitely.
•
The preservation of the environment due to ethical beliefs.
•
The variability of plant and animal life in a given area.
•
A community of living organisms interacting with its environment.
CONCEPT
Biodiversity
Sustainability
23
Which of the following is a global sustainability issue that was NOT identified by the Brundtland report in 1987?
•
Human land use
•
Climate change
•
Industrial pollution
•
Loss of biodiversity
CONCEPT
Sustainability
24
Choose the statement that correctly defines continental drift.
•
Tectonic plates cover the Earth’s molten core; when one rose above the water, it became a continent.
•
Continents are the surfaces of constantly moving tectonic plates that float on the Earth’s molten core.
•
Tectonic plates and the continents they formed are unmoving and remain in the same position.
•
Continents were formed by tectonic plates that lie on the molten core of the Earth.
CONCEPT
Continental Drift and Major Extinctions
25
The blueberry bushes in Lawrence’s back yard did not have a good yield this year. He wondered if it was because there hadn’t been much rain. Lawrence decided to water the bushes closest to the house and see if that made a difference.
If Lawrence were following the steps of the scientific method, before he formed and tested a hypothesis, he would __________.
•
Determine if his theory can be disproved
•
Do some preliminary research
•
Attempt to answer the question with a guess
•
Evaluate data collected from testing his idea
1
“Threats of an epidemic haunt citizens as the number of unvaccinated children continue to grow. People are frightened of the implications and angry that a few have placed so many at risk.”
Choose the most likely source for this quotation.
•
A scientist using non-technical language so that others will understand
•
A scientific journal that has been peer reviewed and verified
•
The media, because the language is controversial and sensationalistic
•
A politician, because the statements are general and may be biased
CONCEPT
Scientific Literacy
2
Choose the statement that is most likely made by an environmentalist rather than by an environmental scientist.
•
The burning of fossil fuels causes more environmental damage than using renewable energy sources.
•
Coal-powered plants emit 40 percent of the United States’ total carbon dioxide and 50 percent of its particle pollution.
•
Some renewable energy sources capture their energy from natural processes, such as wind, flowing water, and the sun.
•
Lessening our dependence on fossil fuels is the most important environmental issue facing the world today.
CONCEPT
Environmentalism
3
A new public library installs solar panels on its roof.
•
Not allowing hunting on your property for moral reasons.
•
Removing predators to promote an increase in the deer population.
•
A restaurant uses only local produce and meats.
CONCEPT
Ethics and Stewardship
4
Ecosystems provide many benefits to humans, which are termed "ecosystem services." Using natural resources for food and fuel is an example of the (A) provisioning services that ecosystems are capable of providing.
A
regulating supporting cultural provisioning
CONCEPT
Biodiversity
5
Which of the following is true about continental drift?
•
The movement of tectonic plates is caused by earthquakes and volcanoes.
•
Biodiversity is improved by the joining of continents, which decreases the amount of shoreline.
•
Throughout the planet’s history, tectonic plates have remained in generally the same positions.
•
Tectonic plates float on the molten core and are constantly in motion.
CONCEPT
Continental Drift and Major Extinctions
6
Select the date and time of human arrival according to the one-year calendar model based on the Big Bang theory.
•
December 31, 11:54 PM
•
December 1, 12:00 AM
•
December 30, 11:59 PM
•
December 15, 11:55 PM
CONCEPT
Earth's Formation
7
Read the statements describing environmental impacts of population growth.
Choose the statement that does NOT trace an accurate progression.
•
More land is required, which leads to deforestation, which leads to less oxygen in the atmosphere.
•
More energy is needed, which leads to over-reliance on fresh water systems, which leads to water pollution.
•
More energy is needed, which leads to burning of non-renewable natural resources, which leads to their depletion.
•
More land is needed, which leads to habitat damage, which leads to loss of ecosystems.
CONCEPT
The Impact of Population Growth
8
The atmosphere on early Earth (4.5 to 3.8 billion years ago) __________.
•
was formed by lightning energy and UV radiation
•
consisted of a combination of gases, including oxygen
•
created unfavorable conditions for forming chemical bonds
•
allowed for the chemical processes that led to early life
CONCEPT
Earth's Formation
9
Select the item below that is abiotic.
•
Trees
•
Rainfall
•
Algae
•
Fungi
CONCEPT
Environmental Science
10
Which of the following is a global sustainability issue that was NOT identified by the Brundtland report in 1987?
•
Climate change
•
Human land use
•
Loss of biodiversity
•
Industrial pollution
CONCEPT
Sustainability
11
Which of the following is the best example of how a government agency can apply environmental science?
•
Study the decline in honeybee populations around the world.
•
Purchase only free-range, organic chicken.
•
Regulate air emissions from a coal factory.
•
Provide mosquito netting for malaria-stricken areas.
CONCEPT
Applying Environmental Science
12
Plant and animal life faced many challenges when moving from water to land.
Select the FALSE statement about this transition.
•
Plant and animal life suffered from a lack of consistent sunlight on land.
•
Organisms tended to dry out upon moving to land.
•
Organisms had to adapt in order to reproduce on land.
•
Plant and animal life experienced increased effects of gravity on land.
CONCEPT
Early Life
13
Which of the following describes an effect of an environmental issue experienced at the local level?
•
An entire species of deer has become extinct because of overhunting.
•
Warming temperatures and rising sea levels are affecting many island populations.
•
Highway noise and pollution have increased dramatically ever since this section of interstate was built.
•
Everyone left work for the day after mold was discovered growing on a ceiling tile.
CONCEPT
Time, Scale, and Impact
14
Melissa believes that all living creatures are similar in their desire to avoid pain.
Melissa holds which of the following environmental ethical positions?
•
Ecocentric
•
Biocentric
•
Ethnocentric
•
Anthropocentric
CONCEPT
Ethics and Stewardship
15
Select the statement that correctly defines an ecosystem.
•
The number and abundance of species living in a certain area.
•
Living organisms interacting with nonliving components in a specific area.
•
A relationship between humans and nature in which resources can be used indefinitely.
•
Services that humanity benefits from, including water purification and soil formation.
CONCEPT
Biodiversity
Sustainability
16
Choose the factor below that is likely to have led to the greatest number of mass extinctions.
•
Asteroids
•
UV radiation
•
Earthquakes
•
Temperature change
CONCEPT
Continental Drift and Major Extinctions
17
Match the graph image below with its corresponding type and common use.
•
Scatter plot showing the frequency of characteristics across groups.
•
Line graph showing the direction or sequence of a process.
•
Scatter plot showing the relationship between two characteristics.
•
Line graph showing a trend relative to changes in time.
CONCEPT
Graphic Literacy
18
Select the statement that defines a physical law.
•
A concept that is tested but can be disproven.
•
A concept that is tested and widely agreed upon.
•
An abstract thought that changes continuously.
•
A universal rule that does not change over time.
CONCEPT
Science & The Scientific Process
19
Jocelyn is making a chronological list of the events that occurred to create early life.
1. Inorganic molecules joined to form complex organic molecules.
2. Once encased in a membrane, these molecules began to replicate themselves.
3. __________.
4. One type of metabolism led to the production of oxygen.
5. Prokaryotes formed interdependent relationships to create eukaryotes.
6. Eukaryotes led to different cell types performing different tasks.
•
Lightning in a water environment led to photosynthesis.
•
Water subsided from certain areas of the planet, allowing plants to adapt to land.
•
Some prokaryotes joined together: one protected and one provided energy.
•
Called prokaryotes, the organisms developed the ability to metabolize.
CONCEPT
Early Life
20
The Industrial Revolution was a factor in a global population explosion because as population increased, cities and their infrastructures grew.
Select one statement that is NOT a result of this change.
•
Clean water became less accessible.
•
New forms of transportation led to a new mobility for citizens.
•
Improved food production fed more people.
•
Energy was more readily available in cities.
CONCEPT
Human Arrival and Expansion
21
Choose the sentence that describes Thomas Malthus and his contributions to environmental awareness.
•
He wrote the book The Population Bomb, in which he discussed the negative effects of human population growth.
•
His book Silent Spring, published in 1962, raised public awareness of harmful agricultural practices.
•
He wrote “An Essay on the Principle of Population,” published in 1798, that warned of the dangers of human overpopulation.
•
He was the first chief of the United States Forest System and served from 1905 until 1910.
CONCEPT
Environmentalism
22
Which statement is true about human population growth?
•
In 1800, there were 1 billion people on Earth.
•
Population was 200 million people for most of history.
•
Human population doubled between the years 1900 and 1950.
•
World population has experienced continuous growth since 8000 BC.
CONCEPT
Human Arrival and Expansion
23
Select the misleading graph from those below.
• AAA
•
•
•
Option A
CONCEPT
Graphs in Environmental Science
24
Which of the following scenarios projects exponential human population growth on Earth?
•
The human population will peak to 10.5 billion by 2050, only to reduce sharply after that time.
•
The human population will grow slowly but steadily to 8.9 billion by 2050.
•
The human population will reach 7.4 billion by 2050 if growth rates remain unchanged.
•
The human population could reach over 10 billion by 2050 if growth rates remain unchanged.
CONCEPT
The Impact of Population Growth
25
The blueberry bushes in Lawrence’s back yard did not have a good yield this year. He wondered if it was because there hadn’t been much rain. Lawrence decided to water the bushes closest to the house and see if that made a difference.
If Lawrence were following the steps of the scientific method, before he formed and tested a hypothesis, he would __________.
•
Evaluate data collected from testing his idea
•
Attempt to answer the question with a guess
•
Do some preliminary research
•
Determine if his theory can be disproved
1
Which of the following describes an effect of an environmental issue experienced at the global level?
•
Consumers experience dizziness and nausea from pollutants in the water supply.
•
Particulate matter from a coal factory is causing health problems for workers.
•
Formaldehyde in the new office carpeting is causing a severe allergic reaction.
•
The consumption of fossil fuels contributes to air pollution and rising CO2 levels.
CONCEPT
Time, Scale, and Impact
2
Select the statement that correctly defines biodiversity.
•
Protects the environment in ways that can continue indefinitely.
•
The variability of plant and animal life in a given area.
•
The preservation of the environment due to ethical beliefs.
•
A community of living organisms interacting with its environment.
CONCEPT
Biodiversity
Sustainability
3
Select the misleading graph from those below.
•
•
•
•
op
option A
CONCEPT
Graphs in Environmental Science
4
Kevin is making a chronological list of the events that occurred to create early life.
1. Inorganic molecules joined to form complex organic molecules
2. Once encased in a membrane, these molecules began to replicate themselves
3. Called prokaryotes, the organisms developed the ability to metabolize
4. One type of metabolism led to the production of oxygen
5. __________.
•
Lightning was a factor in altering inorganic molecules into organic organisms.
•
Some prokaryotes formed symbiotic relationships where one protected and one made energy.
•
The production of oxygen led to the formation of eukaryotes, which led to multicelluarity.
•
Prokaryotes differentiated into separate categories, including bacteria and algae.
CONCEPT
Early Life
5
Choose the statement below that is NOT true about early Earth's atmosphere.
•
The ozone layer was quite thick.
•
There was no free oxygen.
•
Conditions were favorable for forming chemical bonds.
•
Both ammonia and methane were present.
CONCEPT
Earth's Formation
6
Which statement about human population growth is FALSE?
•
From 200,000 BC through 8,000 BC, the global population was low.
•
The world population doubled between 1959 and 1999.
•
From 1350 AD to the present the world has experienced continuous population growth.
•
Global population is expected to peak at 7 billion, then begin decreasing
CONCEPT
Human Arrival and Expansion
7
Which of the following is the best example of how a nonprofit organization can apply environmental science?
•
Use data to formulate climate change predictions.
•
Promote sanitation and clean drinking water in developing nations.
•
Reintroduce an endangered species into a national park.
•
Vote for a political candidate who supports environmental issues.
CONCEPT
Applying Environmental Science
8
The Industrial Revolution was a factor in a global population explosion because as population increased, cities and their infrastructures grew.
Select one statement that is NOT a result of this change.
•
Improved food production fed more people.
•
New forms of transportation led to a new mobility for citizens.
•
Energy was more readily available in cities.
•
Clean water became less accessible.
CONCEPT
Human Arrival and Expansion
9
Which of the following is an example of environmental ethics?
•
A facility cleans wastewater in a way that does not use harmful chemicals.
•
A school replaces incandescent bulbs with LED bulbs.
•
An individual believes that nature and animals have intrinsic value.
•
Volunteers meet monthly to pick up trash at the park.
CONCEPT
Ethics and Stewardship
10
Select the statement that describes a scientific theory.
•
A concept that cannot be tested.
•
An abstract idea that changes constantly.
•
A universal rule that does not change over time.
•
A concept that can be supported but not proven.
CONCEPT
Science & The Scientific Process
11
Choose the best explanation of the distinction between environmental science and environmentalism from the options below.
•
Environmental science holds that humans have a responsibility to be aware of their impact on the environment, and environmentalism is a social movement that urges action.
•
Environmental science is a subjective examination of human interactions with the environment, and environmentalism is an objective assessment of how humans relate to the environment.
•
Environmental science is dedicated to protecting the environment while environmentalists concentrate on the legal, political, and social ways to do so.
•
Environmental science remains objective, while environmentalism is concerned with ethical questions about right and wrong concerning the environment.
CONCEPT
Environmentalism
12
Select the date and time of human arrival according to the one-year calendar model based on the Big Bang theory.
•
December 31, 11:54 PM
•
December 1, 12:00 AM
•
December 15, 11:55 PM
•
December 30, 11:59 PM
CONCEPT
Earth's Formation
13
Choose the sentence that describes Thomas Malthus and his contributions to environmental awareness.
•
He wrote the book The Population Bomb, in which he discussed the negative effects of human population growth.
•
His book Silent Spring, published in 1962, raised public awareness of harmful agricultural practices.
•
He wrote “An Essay on the Principle of Population,” published in 1798, that warned of the dangers of human overpopulation.
•
He was the first chief of the United States Forest System and served from 1905 until 1910.
CONCEPT
Environmentalism
14
Ecosystems provide many benefits to humans, which are termed "ecosystem services." Photosynthesis and soil formation are examples of (A) supporting services.
A
supporting regulating provisioning cultural
CONCEPT
Biodiversity
15
Match the graph image below with its corresponding type and common use.
•
Scatter plot in which data is depicted by using individual dots for data points.
•
Line graph in which data is depicted by using horizontal or vertical bars.
•
Line graph in which data is depicted by using a line connecting data points.
•
Scatter plot in which data is depicted by using images to represent values.
CONCEPT
Graphic Literacy
16
Which of the following is a global sustainability issue that was NOT identified by the Brundtland report in 1987?
•
Energy use
•
Safe drinking water
•
Human population growth
•
Natural resource use
CONCEPT
Sustainability
17
Plant and animal life faced many challenges when moving from water to land.
Select the FALSE statement about this transition.
•
It was more difficult to reproduce on land.
•
Plants provided a food source for animals on land.
•
Radiation from the sun caused mutations that killed organisms on land.
•
It was easier for animals to hunt on land.
CONCEPT
Early Life
18
Melissa believes that all living creatures are similar in their desire to avoid pain.
Melissa holds which of the following environmental ethical positions?
•
Ecocentric
•
Anthropocentric
•
Ethnocentric
•
Biocentric
CONCEPT
Ethics and Stewardship
19
Which statement about projected human population growth below is incorrect?
•
If population growth dramatically slows, the Earth's population will be 7.4 billion by 2050.
•
The population in 2050 will reach 10 billion if growth continues to increase.
•
Innovation and technology have little influence on projected population growth.
•
Continuing to slow the growth at current rates will result in a population of 8.9 billion by mid-century.
CONCEPT
The Impact of Population Growth
20
Most scientists believe the event that led to the extinction of the dinosaurs was caused by a(n) __________.
•
super nova
•
asteroid impact
•
volcanic eruption
•
massive tidal wave
CONCEPT
Continental Drift and Major Extinctions
21
Select the item below that is abiotic.
•
Trees
•
Algae
•
Rainfall
•
Fungi
CONCEPT
Environmental Science
22
Choose the statement that correctly defines continental drift.
•
Continents were formed by tectonic plates that lie on the molten core of the Earth.
•
Continents are the surfaces of constantly moving tectonic plates that float on the Earth’s molten core.
•
Tectonic plates and the continents they formed are unmoving and remain in the same position.
•
Tectonic plates cover the Earth’s molten core; when one rose above the water, it became a continent.
CONCEPT
Continental Drift and Major Extinctions
23
“Let’s use the scientific method to solve this,” said John.
His roommate Dean stared. “Huh?”
“Look. We plug in the blender to make our smoothies, but it won’t turn on, right? So we ask ourselves why. We see that other electrical things are working in the apartment, so we know it isn’t a problem with the electricity.”
“So why won’t the blender turn on? The outlet? The blender itself?”
“Exactly,” John said. “Those are the things we have to check.”
“I think it’s a crappy blender,” said Dean, “and that we should just replace it.”
“I guess you’re right,” said John. “You wanna drive?”
According to the steps of the scientific method, which of the following did the roommates fail to do?
•
Test the hypothesis
•
Formulate a question
•
Arrive at a hypothesis
•
Reach a conclusion
CONCEPT
Science & The Scientific Process
24
Read the statements describing environmental impacts of population growth.
Choose the statement that does NOT trace an accurate progression.
•
More energy is needed, which leads to the burning of fossil fuels, which contributes to an increase in CO2 in the atmosphere.
•
More water is needed, which leads communities to rely too much on fresh water systems, which contributes to an overall decrease of potable water supplies.
•
More energy is needed, which leads to the use of renewable natural resources, which contributes to their depletion.
•
More food is needed, so humans clear more land for crops, which contributes to deforestation and loss of oxygen production from trees.
CONCEPT
The Impact of Population Growth
25
"DNA in mammal cells is arranged in distinct configurations within the mitochondrial system."
Choose the most likely source for this quotation.
•
A politician who wants to influence public opinion and further his own political agenda
•
A scientist writing in non-scientific language to appeal more broadly to the general public
•
A scientist writing in a scientific journal, because it uses language appropriate for its audience
•
The media, because it is a mixture of data, speculation, and scientific jargon