Which of the following both release carbon dioxide to the
atmosphere AND store carbon in their biomass.

Select one:
a. Plants and animals only.
b. Plants, animals, and soil organisms (decomposers).
c. Plants only.

Which of the following is unlikely to be an ecological
consequence of climate change?

Select one:
a. Shrubs in the Arctic Tundra will shift their ranges towards the
equator.
b. Small mammals in Yellowstone Park shift their distribution to
higher elevations.
c. Ocean acidification selects for phytoplankton that can withstand
lower pH.
d. Isolated populations of long-lived species that can neither
acclimate, shift their range, nor adapt go extinct.

Which of the following is normally the longest-lived reservoir
for carbon? In other words, which carbon pool had the longest
residence time before human intervention?

Select one:
a. Marine plankton
b. Atmospheric carbon dioxide
c. Petroleum
d. Wood

Do the carbon atoms following decomposition by microorganisms
end up in a different location than if the gasoline was burned in a
car?

Select one:
a. Yes
b. No