Which best describes the role of nitrogen in the human body?
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a. makes up 1.5% of the human body
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b. transfers energy in cells
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c. makes energy in cells
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d. main ingredient of protein
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It is believed that europa, one of jupiter’s moons has an ocean beneath its surface. based on how earth’s oceans and atmosphere are believed to have formed, what can be said about europa’s supposed ocean? the arrival of in the early days of europa’s existence could have formed its ocean. it is likely that the water experienced , similar to earth. it is also possible that this water is retained beneath europa’s surface and in its atmosphere due to europa’s .

Which event would lead to primary succession of a forest?

Which of the following types of stars are dim but can have high surface temperatures? giants main sequence stars supergiants dwarfs