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.
What is the Total Number of Teeth in the Mouth? An adult person who has all his or her adult teeth should have a total of 32 teeth. These include 8 incisor teeth (four upper and four lower), 4 canine teeth (two upper and two lower), 8 premolars (four upper and four lower), and 12 molars (six upper and six lower). The 4 wisdom teeth are among the molars. A child, who is younger than 6 years old, usually has 20 deciduous teeth. These include 8 primary incisor teeth (four upper and four lower), 4 primary canine teeth (two upper and two lower) and 8 primary molars (four upper and four lower).