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.
Animal teeth. Animals' teeth are different depending upon what foods they eat. Meat-eaters (carnivores) have sharp teeth. Plant-eaters (herbivores) have flat teeth. Animals that eat both plants and meat, like humans, have sharp teeth in front and flat teeth at the back. Sharks lose teeth each week. They get new teeth when they lose the old ones. They may have over 20,000 teeth in a lifetime.