Earth's craters are enduring testaments to direct asteroid hits. And though millionsâin some cases billionsâof years of erosion have made it difficult to determine the exact size of the meteorites, there is a general scientific consensus around the world's largest craters, which mark the largest asteroid impacts. Here are the ten biggest known: 1. Vredefort Crater.
Quick Answer. Tiger sharks have a row of 24 teeth in their upper jaw and a matching set of 24 teeth in the lower jaw, totaling 48 teeth. Tiger sharks have a square jaw structure, and each of their teeth are built with cutting and sawing mechanisms. Continue Reading.
But have you ever wondered why in the world sharks have so many teeth in their mouth? After all, other animals and fish can get by just fine with a fraction of the amount of teeth that sharks have, so why do sharks need so many? If you're wondering the answer to this age-old question, keep reading and we'll explain why sharks have so many teeth.