They walked along the border to map it
Density (a) is the correct answer
<span>Scientists believe that differences in density cause hot, plastic-like rock in the asthenosphere to rise toward earth's surface. </span>
it is north.................................................
The altitude ranges from 500 ft to 11500 ft
Answer:
this is because the continents where in diffrent positions then the outer most parts where more tropicle and the ferther you went into the mass the more it resembled a desert as the continents moved the plants started to change and adapt and the tropicle plants started to reduce to islands and some costal regions the continents eventualy had compleatly diffrent climats the northern and southern had always bin on oposite sides of seasons which gave the life on the planet room to evolve.
Explanation:
