What is found in the cryosphere? O A. Mostly seawater from Earth's oceans
O B. Most of Earth's freshwater
O C. Only frozen water at the polar caps
D. Only frozen soil known as permafrost

Which of the following would be an important part of a multi-step plan to restore the stability of the red-cockaded woodpecker's ecosystem?

15 ! come and answer! a(n) disease is caused by a pathogen and can spread among organisms. a infectious b noninfectious c toxic d contaminated

The concept of keystone species is controversial among ecologists because most organisms are highly interdependent. if each of the trophic levels is dependant on all others how can we say one is most important