<span>The people of Texas Improve access to public transport to promote more active transport for other people around the world.</span>
Oxygen cycle The cycling of oxygen between the biotic and abiotic components of the environment (see biogeochemical cycle). ... In the process of respiration oxygen is taken in by living organisms and released into the atmosphere, combined with carbon, in the form of carbon dioxide.
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The normal form of the prion protein PrP (shown here) is found on the surface of nerve cells, but when it changes into its misfolded form, it aggregates into long fibrils that clog up the normal functioning of the brain.
Weathering is wearing down objects by elements in an environment
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An organism with five pairs of chromosomes can have 32 genetic possibilities from a variety independent of its single gamete.