Why are satellites placed into orbit at least 150 km above earth’s surface?

Anybody wanna ? (picture included? )

What is a possible result of higher air temperature caused by global warming

You are driving directly behind a pickup truck, going at the same speed as the truck. a crate falls from the bed of the truck to the road. (a) will your car hit the crate before the crate hits the road if you neither brake nor swerve? (b) during the fall, is the horizontal speed of the crate more than, less than, or the same as that of the truck?