Answer:
A continent is one of seven main divisions of land that make up Earth.
Explanation:
They give us informations about our ancestors and how did they live and what did they do and than compare it to present way's of life.
4 degrees
Explanation:
Relatively steeper than the shelf, the slope angles down to the ocean basin at an average of 4 degrees in some areas, the angle may be as much as 25 degrees.