Answer: A
Explanation:
Our universe was born from the Big Bang about 13.5 billion years ago. ... Our solar system began forming about 4.6 billion years ago within a concentration of interstellar dust and hydrogen gas called a molecular cloud. The cloud contracted under its own gravity and our proto-Sun formed in the hot dense center.
Answer:
b. the ocean regulates climate
Explanation:
The answer is,Different animals with similar structures:)
Answer:
what kind of quastion is this
Explanation:
