Answer:
Scientists believe that plate tectonics is an example of an internal force that changes the Earth’s crust.
Plate tectonics is a theory that describes the motion of seven large plates, and many other smaller plates of the Earth's lithosphere. When they collide they can make mountains or we can feel their motion as earthquakes. Their motion is responsible for the continental shift and it made our continents look the way they look today.
After a thorough research, there exists a question that has the following questions.
<span>A. outdated
B. imaginative
C. non-testable
D. unacceptable
</span>
So, the correct answer is (C) non-testable. The reason why it is non-testable because these are considered theories of the solar system in which non of us exists before it was created.
Answer:
Correct answer is through intelligence about the Soviet nuclear program
.
Explanation:
First two options are not correct of course because this led more to the strengthening of economy of United States, and was not pointed towards the Soviet Union.
Third option is not correct as this was related more to their space race that started during the 1950s.
Last option is correct as both countries were espionage each other which in some cases almost led to the war between two countries.
