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This image shows the hierarchy of complexity in humans. Organisms are composed of organ systems, organ systems a… | Biology lessons, Study biology, Teaching biology
Visible Body - Every living organism on Earth is composed of cells — microscopic units that are bound by a plasma membrane and contain cytoplasm, DNA, and ribosomes. Humans have trillions of
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Organisms and micro-organisms a cohabitation between humans and bacteria and viruses. bacteria and viruses are in our environment (air, water, soil, o Stock Photo - Alamy
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