Hydrogen and oxygen cells combine explosively combine.-answers.com
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<span>The nitrogen cycle could not exist without first nitrogen. The cycle is about this specific element which goes to show that if this element is not present then, there will not be any nitrogen cycle. Also, an important factor for the cycle is the presence of the bacteria and other microorganism which are needed for the fixation. </span>
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Our sun is extremly hot. like our sun, hydrogen is being converted into helium, a process which gives off energy that heats the star
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The major functions of the circulatory system is it delievers oxygen and nutrients to cells and takes away wastes.
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The answer to your question is A. Higher latitudes receive less radiation due to the curvature of the Earth.
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