Please help me I am stuck on my last question You are the lucky student of a wac

Question

Please help me I am stuck on my last question

You are the lucky student of a wacky professor who develops a time machine. He asks if you will test it with him. You get in and there is an immediate glitch–the date readout fails so that when you land you are not sure what era you are in. As your time machine lands, you see an unusual landscape before you. As you open the door you realize you cannot breathe. You quickly shut the door, realizing you are in the _____.

1)

2)

3)

4)

1)

Archaean eon

2)

Cambrian period

3)

Cenozoic era

4)

Mesozoic era

Explanation / Answer

The correct Answer is the Option (1) Archaean eon

During the Archaean eon about 3.8 billion years ago, the earth's atmosphere was three times hotter than today's atmosphere. Earth's atmosphere was mainly more carbon dioxide and none of the Oxygen was in the atmosphere. In Archaean eon sedimentary rocks, stromatolites and first one-celled organisms appeared.

During Cambrian period sudden increase in diversity of many animal phyla was observed.

In Cenozoic era extinction of dinosaurs and rise of earliest homo sapiens has seen.

In Mesozoic era is divided into three periods like Triassic, Jurassic, and Cretaceous. First mammals and dinosaurs appeared during the Triassic period. First birds appeared in Jurassic and first flowering plants appeared in the Cretaceous period.

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