We were far away from Germany, Italy and Japan. Water seperated the U.S. from the attacking countries so it was harder for them to attack the U.S.
A.} Valuable mineral resources
Answer
Exploratorium Senior Scientist Paul Doherty explains why not—the orbit of the moon is tilted relative to the orbit of the Earth around the sun, so the moon often passes below or above Earth. At those times, it does not cross the line between the sun and the Earth, and therefore does not create a solar eclipse.
Answer:
Option (D)
Explanation:
A supernova is referred to as the disastrous explosion of a massive star that produces bright light, releasing a huge amount of matter into space. For a star to form a supernova, the star must possess mass that is about 8 to 16 times more than the mass of the sun. It releases a large quantity of matter and huge amount of energy into space, increasing its brightness. This giant star undergoes an explosion because of the collapsing of its own gravitational force.
Thus, a supernova is seen to occur when the star that explodes has a mass 10 times more than that of the sun.
Hence, the correct answer is option (D).
The atmosphere protects us from the harmful effects of the Sun's radiation. Without the sun, we would freeze to death because we cannot survive without heat. The atmosphere cycles water from the oceans to the atmosphere to the land which is essential for life.
Hope this helps.
