Answer:
The sidebar tells us what Earth scientists are actually doing about the risk of an asteroid impact.
Explanation:
The main part of the page discusses how frequently the moon is hit by rocks; how most rocks are too small to make it past Earth's atmosphere; how the rocks that do make it all the way to Earth's surface are usually pretty small and don't hit anything important; how screwed we would be if a massive rock – like an asteroid – made it to Earth's surface.
The sidebar says that scientists are understandably worried enough about these asteroids – they "feel the danger is to great to ignore" – so they're keeping a lookout for asteroids that might be on a collision course with Earth.
Answer:
Study, study, study! I can’t really tell you what not to study, but focus most on subjects you aren’t the best at. Say your best subject is history. You don’t want to study hard on history when you already know all that. Study your weak points. Good luck, and I hope this answers your question!
<span>C. the adventures she had experienced during her travels
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