Answer:
d
Explanation:
Condensation nuclei are important because they form the basic building blocks of clouds. The condensation nuclei are tiny particles on which water vapor molecules form to create the most basic elements of clouds.
Later, other water molecules continue grouping around the original condensation nuclei and get larger to form raindrops.
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Warm the air because, when water evaporates the cool water, it makes the air warmer, the warmer the air is, water will evaporate more