<h2>
Answer: C) stars in these regions are hidden by interstellar dust grains.</h2>
Explanation:
Some areas of the Milky Way seem dark because those are areas of the galaxy that are hidden by huge columns of interstellar dust that we cannot see through the visible range of the electromagnetic spectrum (which is the range in which our eyes see).
However, to solve this problem, astronomers use telescopes that work in the range of infrared and radio waves, to observe a little more through this intersetelar dust.
The mantle is actually a liquid. The intense heat of the core of the Earth causes the mantle to move in convection currents.
Answer:
Mountains or other topography
Explanation:
This makes sure the air rises and cools in temperature, but because they cant hold that much of the water they form into clouds.
The answer is I. 25 meters.
