Why is life possible on the earth? Give three reasons.
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7
Answer:
Earth's amazing gaseous atmosphere is responsible for making life possible on this, the third planet from the Sun. Our atmosphere contains water vapor which helps to moderate our daily temperatures. Our atmosphere contains 21% oxygen, which is necessary for us to breathe, 78% nitrogen, and .
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2
Answer:
1. Presence of oxygen and water.
2. Ozone layer covering to protect us from Sun's heat .
3. Blanket of Air called Atmosphere .
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