The sentence that is true is A galaxies are holder together by gravity it is not D because galaxies are real its not C because they are not being pulled apart and its not B because galaxies are held together.
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D- species
A biological species is a group of organisms that can reproduce with one another in nature and produce fertile offspring.
Answer:
Sound waves and light waves need to change places.
Explanation:
i did the test, i got the answer correct.