<span>Scientists choose where are units of time began and ended based on major changes in life forms at certain times</span>
sedimentary is a example, indious is heat sedimentary is like layers and fossils and metamorphic is pressure
Answer:
The imaginary vertical lines that run from the North pole to the South pole on a map are called longitudinal lines. The equator is equidistant from the North and South poles. Then, the equator separates the northern and southern hemispheres.
Explanation:
