Fresh water and salt water together cover 3/4 of the earth's surface.
<span>Areas immediately to the leeward of the mountains have a microclimate with sparse precipitation called a rain shadow.
It is described as "</span><span> a patch of land that has been forced to become a </span>desert because<span> mountain ranges blocked all plant-growing, rainy </span><span>weather" On one side of the mountain the weather is wet, rainy and snowy. And on the other side (the rain shadow) there are no precipitations. </span>
The given information is expressed in ratio. However, a ratio is basically a fraction. So, 4:10 is just equal to 4/10 or 2/5 in simplified terms. Similarly, 12:20 is just equal to 12/20 or 6/5 in simplified terms. The smaller ratio is 2/5 because the numerator is less than the denominator. So, it follows that the answer is less than 1. The other ratio has a much greater numerator. So, we would expect that that would be greater than 1.
The main mechanism through which the layering happened is gravity: it pulled the heavier, denser material to the center, leaving the less dense material on the surface.
The material that was on the outside cooled quicker, but this was the result, not the cause.
The answer is
<span>2) Gravity caused more-dense material to move toward the center of each planet.</span>
Answer:
External/ internal migration.
