The correct answer is:
An understanding of the number and size of leftover planetesimals in the early solar system.
The giant-impact hypothesis proposes that the Moon was created out of what was left of a collision between Earth and an astronomical body the size of Mars, around 4.5 billion years ago, in the Hadean eon. The heavy bombardment was a period when leftover planetesimals hit planets during the solar system's first hundred million years.
I’ve never read that book sorry
The first nation to become independent from colonial rule: Viet Nam (1945) (1954)
Answer:
I believe the industry that is not growing at this time are the railroads.
Explanation:
I believe the railroad company is not growing right now because in many countries people are not even allowed to go outside, so how could they go on a train. For the countries that are allowing people to go out, the citizens that do go outside are usually people who need to go to their job and they will not go on a train because they will be trying to social distance and stay away from other people.