B. grew quickly as cites grew rapidly
The correct answer is - c. east.
The Appalachian Mountains are located in the eastern part of the United States, and since the Rocky Mountains are in the western part of the country, it puts them east of the Rocky Mountains.
The Appalachians are a very old mountain range, they are dated to about 480 million years ago when they formed during the Ordovician Period. At their peak, these mountains reached heights similar to the Rocky Mountains and the Alps in Europe, but because of the natural erosion they have shrunk and nowadays are much smaller in height.
(Q1)
Forests throughout the world are shrinking because lots of things need wood to be made and or work. To get wood for needed or necessary things, people have to cut the trees down.
(Q2)
I think that we could have a few days out of the year where almost everyone/everyone who wants to attend can go around and plant some trees. This would help because the seeds would grow and create more trees so we could have a never ending cycle of growing trees.
Hope this helped!
What region are u referring to?