Why are the andes mountains in south america often studied?

a. the andes mountains are home to
thousands of diverse people.

b. the andes are difficult to cultivate and yet have produced excellent farms for centuries.

c. the andes contain the most extreme variations in landscape, vegetation and climate of any mountain group in the world.

d. the andes are home to many international research groups and universities.

Sandstones that form in aeolian (wind/desert) environments appear very different from other sandstones, such as those formed in a beach/ shoreline environment and in rivers on land. give three identifying properties for each of the three sandstones that would tell a geologist which depositional environment they formed in. consider things such as the relationship between transportation and grain size, shape, roundness, sorting, fossils and composition.

Me answer as many as you can what percentage more of water is used to provide us with electricity versus for irrigation? do we use more freshwater in our homes or to provide us with electricity?

In 2002, north korea announced that it was shutting down its nuclear facilities constructing a hydroelectric energy plant restarting nuclear weapon development changing to a free market economy