Answer:
The first human ancestors appeared between five million and seven million years ago, probably when some apelike creatures in Africa began to walk habitually on two legs. They were flaking crude stone tools by 2.5 million years ago. Then some of them spread from Africa into Asia and Europe after two million years ago.
Answer:
Serpentine minerals are made of tiny sheets of silica tetrahedrons that are loosely held together.
A: Glyclosis
This is just a guess as I need to answer at least one question
Because its is a bit more rare than iron .
