3. Earth and Mercury are both inner planets in our Solar system, yet Mercury's surface has many more craters than Earth's surface. Why is Mercury so heavily cratered while Earth has evidence of very few impact craters?

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Which of the following is one of the four conditions necessary for natural selection to occur in a population? fewer organisms are born than the habitat can support mutation does not occur organisms have identical characteristics variation is inherited

Which of these is most likely to happen if parallax measurements of star distances are taken after a gap of six months? the results would be accurate the results would be inconsistent the results would not be valid the results would not be repeated

Identify any four organelles that should be present in the eukaryotic organism and describe the function of each organelle