They produce oxygen they are used as shelter, they are used for blocking the shade, they sustain other animals that sustain the planet and us.
Classification of living things takes into consideration of everything, except A. The number of cells the organism is found to have.
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Light is electromagnetic radiation within a certain portion of the electromagnetic spectrum. The word usually refers to visible light, which is the visible spectrum that is visible to the human eye and is responsible for the sense of sight.
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A census is a count of the population in particular areas.
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A biome is a group of ecosystems with the same climate
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