It reduces the amount of harmful rays released by the sun and It increases the levels of carbon dioxide in the air.
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Answer:
No, The respiratory system does not work alone in transporting oxygen through the body. The respiratory system works directly with the circulatory system to provide oxygen to the body. Oxygen taken in from the respiratory system moves into blood vessels that then circulate oxygen-rich blood to tissues and cells.
Explanation:
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I'm not 100% sure but I would say watermelon. Watermelon is predominantly water like most melons.
A controlled variable is not changed throughout an experiment. It is there so that the other variables being tested on can be better understood.
“Producers are any kind of green plant. Green plants make their food by taking sunlight and using the energy to make sugar. The plant uses this sugar, also called glucose to make many things, such as wood, leaves, roots, and bark. Trees, such as they mighty Oak, and the grand American Beech, are examples of producers.” -Virginia Tech
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