<span>Scientists choose where are units of time began and ended based on major changes in life forms at certain times</span>
So major areas is Spain, Italy, England, France, and also Germany.
The answer is B I think...
C, take hundreds of millions of years to form!
Good afternoon!
Answer-
The scale of a map is the ratio of a distance on the map to the corresponding distance on the ground. This simple concept is complicated by the curvature of the Earth's surface, which forces scale to vary across a map.
Have a nice day!
-Sky
