The atomic mass unit is a unit used to represent the of an atom

Why is permeable soil best for plants that need a lot of drainage?

Aradio signal from a gps satellite take only about 0.067 seconds to reach a gps reciever. if the speed of light is about 300,000km/s, then approximately how far away is the reciever from from the satellite?

Which part of earth’s surface receives the most direct rays from the sun? a) equator b) ocean c) poles d) mountains