Why must plants have a constant source of carbon dioxide? A: It is utilized in the process of photosynthesis to make glucose
B: It is the final acceptor at the end of the Calvin cycle.
C: It acts as a coenzyme in the process of photosynthesis.
D: It is utilized in the synthesis of chlorophyll.

The graph shows the amount of global warming happening in different ecosystems. which populations of organisms will likely decline the most as a result of climate change, and why? a.coral reefs because of the loss of the symbiotic algae living within their bodies b.penguin populations because the fish they eat will move into warmer waters c.mountain-dwelling birds because rising sea levels will relocate their food sources d.large cats in the rainforest because of decreased habitat loss for their prey