C. humus
the answer is humus cause it really has nothing to do with soil.
Answer:
no i don't know the answer
1). A good example for mutualism is People and plants. We provide plants Carbon dioxide. Plants provide us Oxygen
2).Biome is where you have your tundras, Rain forests, Deserts, etc. then you have to give 3 characteristics like temperature, precipitation levels, soil type, etc.
I will have to get to question 3 later since im in class but ill give you the answer to that one. its easy
Answer:
Answer is A signal is sent down an exon within a nerve cell.
Explanation: