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.
Answer: 4
2x2 is 4 and that is the same thing as 2+2.
Description The Fermi paradox, named after Italian-American physicist Enrico Fermi, is the apparent contradiction between the lack of evidence for extraterrestrial civilizations and various high estimates for their probability. Michael H. Hart formalized the basic points of the argument in a 1975 paper.
Answer:
The answer is D: to dissolve
Explanation:
Hope this helps!
(Brainliest is appreciated)
Answer: 
Explanation:
We are asked to multiply 1 nano sec with 1 km/sec.
The conversion used from nano second to second
1 nsec = 
The conversion used from km to meters:
1 km = 1000 m
Putting the values we get:
Therefore, the given conversion is
