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OLga [1]
3 years ago
6

What human activity contributes to air pollution?

Biology
2 answers:
salantis [7]3 years ago
7 0

Answer:

A.Construction

nataly862011 [7]3 years ago
3 0

Answer:

Mining

Sugarcane farming

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Thus, the calcium balance of the body depends on the secretion of the Parathyroid gland

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