Biology

31 May, 19:57

Animals need various nutrients in order to live and grow. Nitrogen, for example, is a nutrient that is needed to form molecules, such as DNA and RNA. How do animals obtain nitrogen?

A.

They create nitrogen in their bodies using other nutrients as building blocks.

B.

They eat plants which have absorbed nitrogen from the soil.

C.

They breathe in and absorb nitrogen gas from the atmosphere.

D.

all of these

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