At a height of km above the earth's surface, an astronaut finds that the atmospheric pressure is about 1.20e-8 mmhg and the temperature is k. how many molecules of gas are there per milliliter at this altitude?

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 are economic benefits of building dams

Over half of the african-american population in the united states live in