Answers

2016-02-22T17:08:19+08:00
We might die, in this world the quantity doesn't matter. Balance is a must
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2016-02-24T14:13:18+08:00
If only oxygen and no other gases in the atmosphere, death is possible since  the producers (plants) need CO2 in air for them to produce starch, plants wont survive if plants are absent those animals which are  dependent on plants will also die, so the effect will be in a series of death of organisms
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