They can also use carbohydrates so I don't know
Answer:
D penguins. an stay warm in cold artic waters
Explanation:
lipids carry extra energy and store it
Echinoderms have radial symmetry.
Answer:
genrally it includes the population ,community, ecosystem,and biosphere .An ecosystem is all the living things in an area interacting with all of the abiotic parts of environment
