Explanation:
the answer should be d because of the concentration gradient see if that makes sense
I would say that it would be C, Relationships of trees to other organisms in the rain forest...
Answer:
When two or more atoms link up, they create a molecule . A molecule of water is made of two atoms of hydrogen (H) and one atom of oxygen (O). The molecular mass is the sum of the masses of all the atoms in the molecule. A collection of molecules is called a compound.
Explanation:
hope this helps :D
The process by which different kinds of living organisms are thought to have developed and diversified from earlier forms during the history of the earth.
