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.
Sharks have 5 or more rows of teeth. Humans only have 20 baby teeth and 32 adult teeth. Sharks can re-grow teeth. Humans only get 2 sets (milk teeth and permanent teeth). Sharks have serrated edges on their teeth. Shark teeth are not attached to the jaw. Humans bite and chew with their teeth. Sharks use their teeth to rip their prey apart.