What derived character is shared by organisms such as turtles and tortoises, but not by organisms such as mammals?

Plz ! ive been stuck on this forever

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

Which macromolecule catalyzes chemical reactions this be considered enzyme chemical reactions thus he considering enzymes