Answer: Atmosphere
Explanation: <u>Our planet is surrounded by a layer of gases called the atmosphere</u>. Without our atmosphere, there would be no life on earth.
That affirmation is correct.
Further information:
It is estimated that about 3/4 of all species where extinct.
This event gave way to the Cenozoic era, which is the one we live in today.
Hope it helped,
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<em>igneous rocks</em> that form from magma below the surface.
Answer:
the answer is 48
4+12+4+20+8
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