Answer:
Scientists have discovered what they say could be fossils of some of the earliest living organisms on Earth. They are represented by tiny filaments, knobs and tubes in Canadian rocks dated to be up to 4.28 billion years old.
Explanation:
The DNA is splitting in two, thymine pairs with adenine, and guanine pairs with cytosine
c.earths moon
earths moon rotates around the earth and causes night to the earth ,as we all know,so c. is the answer.
