Answer:
The ozone layer is a deep layer in the stratosphere, encircling the Earth, that has large amounts of ozone in it. The layer shields the entire Earth from much of the harmful ultraviolet radiation that comes from the sun
Explanation:
Basically the ozone layer protects the earth from UV rays.
Answer:
The proclamation declared "that all persons held as slaves" within the rebellious states "are, and henceforward shall be free."
Explanation:
I believe, "Tanks were a fast and reliable means of transporting soldiers" is NOT true.
There are different types of terrains the commons ones are plateau, mountain, plain, and valley terrains
