From the air we breathe wich gas is needed by our body

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Be ready as always and love your parents.

answer:

weathering causes the disintegration of rock near the surface of the earth. plant and animal life, atmosphere and water are the major causes of weathering. weathering breaks down and loosens the surface minerals of rock so they can be transported away by agents of erosion such as water, wind and ice.

reference:

Oxygen is what we need 


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