C) To gather info about the natural world, to explain natural phenomena, and allow reasonable predictions of future events
Answer:
A) Neither; they both have the same frequency.
I think it's the evaporation of water through the stomata :)
The astronomical unit, otherwise known as AU is used to measure long distances in the universe.
In photosynthesis oxygen is released to the atmosphere which means the third option is correct.
Hope it helped,
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