The esophagus has to be flexible to allow for food to travel from the mouth to the stomach
The ends of eukaryotic chromosomes are called <span>telomeres.</span>
Robert Hooke built his own compound microscope to examine tree bark.
Answer:
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Explanation:
The sun, earth, and moon are held together by gravity, and they interact in lots of ways. The moon orbits the earth because of the pull of the earth. The tides are another interaction in the sun, earth, and the moon system. The tides happen because the moon and sun pull on the oceans, causing them to rise and fall each day.