What is the importance of the carbon and nitrogen cycles to ecosystems?

a.
they supply the energy needed for living processes.

b.
they are needed to release the energy stored in food.

c.
they provide materials organisms need to build their bodies.

d.
they ensure that matter only moves within a nonliving environment.

Ecosystems involve living organisms interacting with non-living things in a productive way; how is photosynthesis an example of this? answer, i will give brainiest to first person to get it right.

Explain why the plants cortex would serve as the best food source for animals

Which statement about relative potential energy of electrons is correct? a. an electron in the 2 p orbital of the second electron shell has more potential energy than an electron in the 2 s orbital of the second electron shell. b. an electron in the 2 p orbital of the second electron shell has more potential energy than an electron in the 3 p orbital of the third electron shell. c. an electron in the 3 p orbital of the third electron shell has more potential energy than an electron in the 2 p orbital of the second electron shell.