Social Sciences, asked by murkshahzad, 9 months ago

Can ya'll help with this one too? I can't understand.

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Answered by Anonymous
17

Answer:

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1)oxygen

2)nitrogen

3) carbon dioxide

4) hydrogen.

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Answered by Anonymous
8

Answer:

3:-

(a)- oxygen.

(b)- Nitrogen.

(c)- Co2.

(d)- Hydrogen.

Explanation:

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