1) Atmospheric Carbon Dioxide.
Trees are an important part to this planet because they take the carbon dioxide out of the air and convert it to oxygen. When deforestation occurs, there are less trees to do this, resulting in more carbon dioxide in the air.
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Answer:
The answer is D
Explanation:
S-waves and P-waves are located in the mantle and when waves pass through the mantle the bend
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Answer:
The condition of the Earth had to become favourable before it could support any form of life.
The formation of the different layers around the earth like the ozone layer was necessary before life could originate. Primitive species such as some prokaryotes were able to live in hydrothermal conditions during the initial times. With the passage of time, as the concentration of oxygen increased due to photosynthetic prokaryotes, situations became favourable for eukaryotic organisms to arise.
