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Clouds!
Category: Life
Clouds are visible accumulations of tiny water droplets or ice crystals that are (with the exception of noctilucent clouds) visible to the Earth's atmosphere. They tend to appear white as the tiny water droplets are compacted tightly (therefore reflecting most of the sunlight that hits them). We usually see them as white (as that is how our eyes perceive all wavelengths of sunlight mixed together)... » Continue Reading