QUESTION 2 1. Nitrogen is a critical requirement for living organisms, as it is a component of:
carbohydrates and lipids.
lipids and proteins.
lipids and nucleic acids.
nucleic acids and proteins.
nucleic acids and carbohydrates.
2 points QUESTION 3 1. Habitat destruction is the primary cause of animal extinctions. Which of the following
is not an example of habitat destruction?
human beings filling in and draining wetlands
human beings obtaining land for farms
human beings obtaining land for housing developments
human beings obtaining land for industrial developments
All of the above are examples of habitat destruction.
QUESTION 6 1. There are no trees in the tundra because:
of the short growing season.
of the limited supply of nutrients in the soil.
permafrost limits the depth to which roots penetrate.
of limited precipitation.
of low temperatures.
QUESTION 8 1. Decomposers:
act with detritivores to break down and recycle organic matter.
are microbial heterotrophs.
include bacteria and fungi.
use the products of decomposition to supply themselves with energy.
All of the above.
QUESTION 10 Global warming would result from an increase in which of the following components of the
accompanying figure?
THIS THE QUESTION WITH THE DIEGRAM 1 and 2 2
3
4
All of the above.
QUESTION 13 1. The primary reason that Earth experiences seasons is because of the:
Earth's rotation.
Earth's orbit.
Earth's tilt on its axis.
unequal thickness of the Earth's atmosphere.
different layers of the Earth's atmosphere.
QUESTION 16 1. Biological diversity is an index of the variety of living organisms in an ecosystem, and
includes:
species richness only.
species richness, genetic diversity, and ecosystem diversity.
species richness, biosphere diversity, and ecosystem diversity.
population diversity and ecosystem diversity.
genetic diversity only.
Question 17
A(an) __________________ has both biotic and abiotic components.
population
community
ecosystem
species
None of the above.
QUESTION 22 1. All the resources that a species can potentially utilize is part of its
_____, while the resources a species actually uses make up its _____
realized niche, fundamental niche
coevolution, realized niche
habitat, realized niche
fundamental niche, realized
niche
QUESTION 24 1. How do greenhouse gases increase the temperature of our planet?
They direct the longer wavelength heat which would normally be
radiated into space back down to the surface.
They direct the shorter wavelength radiation which would normally be
radiated into space back down to the surface.
They absorb UV radiation so that it is not radiated back out to space.
They allow more heat from the sun to reach the planet.
The mechanism is unknown at this time.
2 points 1. QUESTION 25 Which of the following statements about food webs is true? Food webs show the various paths taken by energy through an
ecosystem.
Food webs do not show omnivores.
Food webs contain a simple chain of organisms feeding on each other
in a sequence.
Food webs show a low number of linkages. 1. QUESTION 26 The _____ is the most important factor driving global temperature
patterns.
Coriolis
effect
wind
ocean
sun

 

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