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:
Explanation:
Bacteria become 'factories' that produce a large number of copies of the recombinant DNA. There are several reasons for the use of bacteria as the host in the recombinant DNA technology. They are; Bacterial cells are easy to grow, maintain, and manipulate in a laboratory.
Archean and Proterozonic which are both broken into early middle and late periods
Answer: Their diet consists of small shrimp and crustaceans, including larvae. As they grow older, they graduate to fish, crabs, and other mollusks.
Explanation:
B. Mainly humid-continental with cool summers.
Thanks :)
