Answer:
on Earth, the main differences in air pressure are caused by differences in temperature. Cool air produces high air pressure and warm air produces low air pressure. Warm air wants to rise. When warm air rises, cool air will move in and replace the warm air, causing wind.
They are a major agent of erosion in desert <span>regions.</span>
Answer:
Explanation:
The water table can be lowered if too much groundwater is pumped out.
The water table can collapse if overpumped, creating a cave
Lakes and streams are surface expressions of the water table.
<h2>Right answer: It is used to measure long distances in space</h2>
A light year (
) is a distance unit that is approximately 
.
By definition it is <em>the distance that a photon would travel in vacuum during a Julian year (365.25 days) at the speed of light (299 792 458 m/s) at an infinite distance from any gravitational field or field magnetic.
</em>
<em>
</em>
In other words:
It is the distance that light can travel in a year.
This unit is used to measure large distances in space. Therefore the correct answer is D.
Answer: 
Explanation:
Assuming that the Earth is a solid sphere, of mass 
and radius 
around an axis that passes through its center, with uniform density (that is: its center of mass coincides with the center of the sphere), its moment of inertia 
is given by the following formula:
(1)
Where:
(2)
Finally:
