Answer:
Explanation: When you use different words in different tenses, it makes you think about the time these events took place. If I said “I walked yesterday” that was in the past but if I say “I’m walking” you know that’s present tense
Answer:
Could happen at any time if we're not prepared.
Explanation:
Asteroids pose a serious threat to all life on Earth, as seen by history, and there might not be very much we can do. Even if we confirmed one was coming directly toward us, what could we do? We'd have to get creative and put ideas and tests into motion on how to get it away.