The acts as a barrier which isolates the two sides of the membrane.

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.

An easy way to calculate the amount of energy available at each level is to what?

For this question look at the hydropic diagram water that is heated by the sun evaporates. select the number that represents it.