Algae, phytoplankton, or any green plants.
Have sex , savor some chocolate, listen to music or eat something spicy
<span>It was then understood that sea otter were <u>a keystone species</u> <u>i</u>n the ecosystem. This term refers to a species which seems to be dominant in a biome - once that species is gone, its prey will explode in number, meaning there will be a lot more of them, and a lot less of the keystone species. This, as you can see, happened here in this case. </span>
Functional residual capacity (FRC)is the volume of air that will remain in lungs after normal expiration.
Check for more information:
(https://en.m.wikipedia.org/wiki/Functional_residual_capacity
Functional residual capacity - Wikipedia)