With the beginning of the middle proterozoic comes the first evidence of oxgen build up in the atmosphere. with is catastrophe came eukaryotic forms. these include multicellular algae, and toward the end of the proterozoic the first animals
It was at that POINT MUTATION began
Answer:
I think b
Explanation:
I think b I am not so sure
Answer:
abrasion
Explanation:its another word for erosion
Answer:
about nine mouths hope this helps
Explanation:
