Groundwater is: stored in porous soil and rock part of the nitrogen cycle unavailable to plants reduced by respiration

Iwill give extra points to who gets this right

What effect might melting sea ice have for people who live in coastal areas?

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?