Alpha Geek
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Part A - Global environmental change defined Environmental change is not limited to climate change or global warming: It includes loss of ozone, decreases in biodiversity, changes in freshwater supplies, urbanization (and corresponding changes in land cover), and changes in food production systems (as a result of land degradation and urbanization). Some of these changes result from natural processes, but many of the changes currently observed are attributed to human activity: Tremendous human population growth since the mid-20th century, along with increasing urbanization and industrialization, and the energy-dependence inherent in those two processes, has led to dramatic changes on Earth’s surface and in its atmosphere. As land is deforested and paved over, as the burning of fossil fuels contributes excess greenhouse gases into the atmosphere, and as humans continue to manipulate physical systems through genetic modification, Earth’s systems increasingly become altered. Select the statements that correctly describe global environmental change. Select all that apply. Human activities are likely largely responsible for many of the changes that Earth is currently experiencing at the planetary scale. Global environmental change refers to all of the changes occurring on Earth’s surface as a result of global warming only. Global environmental change refers exclusively to human-induced changes in Earth’s systems at the planetary scale. Global environmental change refers to changes in any of Earth’s systems, not just climate.