Melanin. “Melanin is produced within the skin in cells called melanocytes and it is the main determinant of the skin color of darker-skinned humans. The skin color of people with light skin is determined mainly by the bluish-white connective tissue under the dermis and by the hemoglobin circulating in the veins of the dermis.” -Wikipedia
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It think it’s c acids remove nutrients
<span>Plants take up carbon dioxide from the air and nutrients from the soil. This is an example of interactions between biosphere, atmosphere and geosphere. The answer is letter B. Bioshphere is the representation of any living organism on earth such as plants and animals. Even the tiniest organism that cannot be seen is considered a part of biosphere. Atmosphere is the blanket of gases that wraps around the earth. We may not see it but we can feel it. Geosphere is the land itself, the earth as a whole. From the core,to mantle and to crust. So in the example given, plants represent the biosphere, carbon dioxide form air represents the atmosphere and soil represents geosphere.</span>
