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.
Learning About Sharks Through Fossils: Consider some facts on why sharks have different types of teeth. General Facts on Shark Teeth: Read about the teeth of different types of sharks on this page from Cornell University. A Closer Look at Sharks and Their Teeth (PDF): Learn about the teeth of mako sharks and great white sharks along with others.