Question

Answer the following questions in complete sentences:
1) How old is the earth?
2) Describe the earth before man existed.
3) Why was there no life on earth??​

Answer 1

Answer:

Hey army

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Answer 2

Answer:

1:-4.543 billion years

2:-The early Earth had no ozone layer and was probably very hot. The early Earth also had no free oxygen. Without an oxygen atmosphere very few things could live on the early Earth. Anaerobic bacteria were probably the first living things on Earth.

3:-The earliest life forms we know of were microscopic organisms (microbes) that left signals of their presence in rocks about 3.7 billion years old. The signals consisted of a type of carbon molecule that is produced by living things.

Explanation:

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