The respiratory system regulates oxygen flow, and provides regulation for oxygen blood content. Circulatory system plays a roll in providing enough oxygenated blood to the body
<span>I think its made of food oxidation.</span>
The retinas of night hunting animals have more rod cells which enable them to see better with minimum light.
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El Nino is a weather pattern which usually peaks during the winter months of the northern hemisphere. This weather pattern involves interaction between the ocean and the atmosphere, resulting in warmer waters in major areas of the Pacific Ocean. When that happens, global weather patterns will be affected so C.
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