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).
<span>B: The region experienced a surplus of food. - the best answer. Nile Valley was located near river Nile in Egypt. It was a flood plain defined like a heaven for farmers. There were perfect conditions for people to grow food and obtain water. The river was flooding created conditions to live like that.</span>
That would just be called Weathering and Erosion. Erosion happens when rocks and sediments are picked up and moved to another place by ice, water, wind or gravity. Mechanical weathering physically breaks up rock. One example is called frost action or frost shattering. Water gets into cracks and joints in bedrock.
Try using demos graphs to see it. there ed is an app and a website