Answer:
Providing a controlled source of water vapour through which water can be vaporized into the plant envoirment.
Explanation:
Humidity ratio is the ratio of the mass of water in air to the mass of dry air. Humidity is needed in some conditions where the air is very dry. In a very dry air setting, there can be excess moisture loss from the plant surface, increasing the Humidity ratio can counter this effects and reduce excess moisture loss.
Cell bio is important so that we can know more about cells and how they function
Scientists estimate that 150-200 species<span> of plant, insect, bird and mammal </span>become extinct<span> every 24 hours.</span>
I believe that the answer is D. If something has evolved, it can not interbreed with its old species. I think this is right!
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The answer is D all of the above
