On the average, how much of the Sun's energy that is intercepted by Earth is reflected back to space?
A) 40% B) 10% C) 20% D) 30%
D
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Which of the following is an example of a positive climate feedback?
A. Rising sea levels decrease coastal regions, affecting freshwater supplies. B. Increased CO2 causes increased uptake by the oceans, causing acidification. C. Warming causes melting of glaciers, affecting the albedo of the Earth.
What is the order for where you would find stream deposits starting at the headwaters and going toward the mouth?
A. silt, sand, gravel B. sand, silt, gravel C. gravel, sand, silt
It is currently impossible to separate plastics from each other by type and grade in a mixed waste stream.
Answer the following statement true (T) or false (F)
Which of the following air conditions is indicated by a coning shape plume rising from a smokestack?
A. neutral B. stable C. unstable D. inversion