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The five processes in the nitrogen cycle – fixation, uptake, mineralization, nitrification, and denitrification – are all driven by microorganisms.
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Body systems. Our bodies consist of a number of biological systems that carry out specific functions necessary for everyday living. The job of the circulatory system is to move blood, nutrients, oxygen, carbon dioxide, and hormones, around the body. It consists of the heart, blood, blood vessels,arteries and veins.
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A) Fats provide 12 kcals of energy per gram.
<span>When the microscope was invented, it helped the cell theory. This invention allowed scientists to see that everything was made up of cells and see what cells do. They needed this invention in order to see that cells existed and study them more in depth.</span>
