Answer:
The answer is A.
Explanation:
The arrows represents being eaten by other organisms.
(Correct me if I am wrong)
Answer:
You can measure mineral hardness with The Mohs' Scale.
Hope this helped :)
Answer:
temperature and whether they are polar or non-polar
Explanation:
1. B. 2.B 3.C.
1. Fossils is a main supporter of the evolution theory
2. Evolution
3. Lack oh adaptation risk death
Nitrogen fixation, N2 --> NH3+, is not something that plants to by themselves but some plants have bacteria that does this. I believe that pea plants have these, but I'm not 100% sure.