Where do electrons get their energy in photosystem II? A. From ADP and ATP
B. From NAD and NADPH
C. From energy in photons
D. From glucose in the Calvin cycle

Cells tend to have a relatively small and uniform size. why aren’t cells larger?

Is there any species that went extinct in recent years due to natural causes (not caused by human interaction). if so, what caused it?

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