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OpenStudy (anonymous):
78% of Earth’s atmosphere contains this nutrient in the form of gas. All living things require this nutrient to make proteins, and it is found in the waste products of many living things. A. Nitrogen B. Phosphorus
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OpenStudy (hugsnotughs):
Nitrogen. Nitrogen is a Group 15 element. Nitrogen makes up about 78% of the atmosphere by volume.
OpenStudy (anonymous):
Spanks.:)
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