Your spinal cord works like a Telephone wire, sending messages back and forth between your body and your brain.
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Not only is water necessary for the physical survival of humans, but many, if not most, human activities also make use of it. Agriculture is critically dependent upon continual supplies of freshwater. Human households also use freshwater daily for cleaning and laundry as well as for transporting sewage to waste treatment plants.
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When microorganisms release carbon dioxide into the soil, the acidity of water surrounding soil particles is increased. This increase in acidity allows for rock present in soil to be broken down, releasing minerals into the soil. These minerals are then available for use by plant life.
Ecologists make models to gain insight into complex phenomena such as the effects of global warming on ecosystems.
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They need energy to produce oxygen
