I believe it would be the biosphere hoped this helped!
I do not really know but i think that the answer is c but wait for other people
Answer:
The first layers of earth are very loose, unconsolidated layers called soil, which is pretty easy to dig into, but as we go deeper we reach the bedrock, which is the hardest part of the soil profile, which is made of hard rocks and matter.This makes it harder to dig more and more deeper.
Explanation:
Answer:
blood is a type of connective tissue
Explanation:
