Answer:
an advantage is living cells can be examined in their natural state without previously being killed, fixed, and stained
photosynthesis: needs light to happen
Cellular respiration: waste products are carbon dioxide and water.
The correct answer is photosynthesis!
In fact, photosynthesis has the opposite effect: of reducing the among of carbon dioxide: it uses this gas and releases oxygen!
All the other options release Carbon dioxide, for example forest fires are a really big contributor to the amount of Carbon dioxide in the atmosphere.
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