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.
Nonchalant is kinda like where you act casual
Answer:
number
Explanation:
the definitions for quantity are "The amount or number of a material or immaterial thing not usually estimated by spatial measurement. The perceived length of a vowel sound or syllable."
Answer:
1. unfamiliar
2. confusing
Explanation:
based on context clues, these make the most sense.
