A DNA molecule in a cell contains .

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Imagine you have a five-step food chain. If 100 percent of the energy is available at the first trophic level, what percentage of energy is available at the highest trophic level

Explanation:

Nucleotides

Explanation:

as resources become scarce because of population growth, the growth decreases after few years due to lack of resources and food.

blue stars have the highest surface temp

stellar distances are usually expressed in light-years

the measure of a star's brightness is called magnitude

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