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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.
Water is the most scarce resource in the Middle East
There are only two countries that are self sufficient in the whole of middle east which are sufficient are Turkey and Iran. 70 percent of the Arab countries get water from non-Arab countries.
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It would lead to a economic decline
Answer:
Both explain how the movement of the Earth's crust occurs.
