Diana pours some water on a lump of dry soil, and sees some bubbles coming out of soil. Based on this observation alone, which gas could be present in the soil?
a)It must be Oxygen
b)It must be Carbon dioxide
c)It must be water vapour
d)We can't say, for sure, which gas it is
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(a) it must be oxygen
gynelledias:
Yes...can you please tell me the answer?
yes
(a)
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(a)it must be oxygen
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