The Cambrian explosion was a period at the Pre-Cambrian boundary of the geologic time scale at 542 Ma. At this boundary, the fossil record shows that animals suddenly appeared in a dramatic radiation of life. A radiation is the relatively rapid development of new types of organisms that derive from a common ancestor. The Cambrian explosion is important because it marks the origination of all major animal groups called phyla.
The area is called the anterior fontanel and closes anytime between 9 and 18 months of age.
Answer:
Mitosis is the process of cell division to make more cells, meiosis is the process of sperm and egg cells dividing to make a baby.
Explanation:
