Answer:
B: There will be structural differences in the reproductive organs of the fruit flies in the populations that mates in the morning and those of the fruit flies in the population that mates at night.
Explanation: I just finished the quiz!
Hey there!
The answer is hydrogen.
Hydrogen is the most abundant element in the <em>universe</em> and is part of the atomic makeup of most celestial objects and even ones on Earth.
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Cells, tissue, organs, organ systems, and organisms.
