Which part of the atmosphere is nearest to the earth?
a. troposphere
b. ozone layer
c. stratosphere
d. ionosphere

In 1870, which path would settlers moving west from el paso to los angeles have followed? a) old spanish trail b) gila trail c) california trail d) oregon trail

Which are results of technological advances? increased people's exposure to new ideas created a global culture valued by people around the world brought harmony to diverse groups of people reduced the number of people living in rural areas

What was the great rift valley formed by