Human Biology

The Cell:

Humans are made of chemicals that bond and are called cells that come together and form tissue like glands, skin, organs, nerves, muscle, bone, hair and nails that need nutrients like water, air, vitamins, minerals, proteins, carbohydrates, lipids and fats, to survive and when they are worn out the DNA produces RNA which absorbs the nutrients around it to produce DNA and a cell and then tissue.

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