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01:59:49
A scientist is examining the role of an element found in fats and carbohydrates of living things. This element makes up 65% of
human body mass.
Which statement describes the element he is studying?
He is studying oxygen, which can also be found in proteins.
He is studying oxygen, which is the most abundant element in the atmosphere.
He is studying nitrogen, which can also be found in proteins.
He is studying nitrogen, which is the most abundant element in the atmosphere.

Describe the change in phase and temperature as water moves from the oceans to the atmosphere and then returns to earth again as rain. a) evaporation : temperature increases; condensation : temperature decreases; precipitation (rain) : temperature decreases b) evaporation : temperature increases; condensation : temperature decreases; precipitation (rain) : temperature increases c) evaporation : temperature decreases; condensation : temperature decreases; precipitation (rain) : temperature decreases d) evaporation : temperature increases; condensation : temperature increases; precipitation (rain) : temperature decreases

Adistinctive characteristic of mammals that is not observed in other vertebrates is

Why is a mushroom considered a heterotroph