Question

The density of atmosphere (measured in kilograms/meter3) on a certain planet is found to decrease as altitude increases (as measured from the planet's surface). What type of relationship exists between the altitude and the atmospheric density, and what would the atmospheric density be at an altitude of 1,291 kilometers?

Answer 1

 Atmospheric pressure decreases with altitude is because of  gravity . The more  you are away from the surface, the less atmosphere you have above you. The  relationship between the atmospheric pressure and altitude depends on the mass of the planet.
hope this helps 

Answer 2

Answer:

Atmospheric pressure decreases with altitude is because of  gravity . The more  you are away from the surface, the less atmosphere you have above you.

Explanation: