A powerful dust storm on Mars erodes rock formations over millions of years. This process is an example of an interaction between which two planetary spheres?

The atmosphere and the geosphere.

The hydrosphere and the cryosphere.

The biosphere and the atmosphere.

The geosphere and the planet's core.

What is the primary cause of the diverse surface features, such as canyons and mountains, found on a rocky planet?

The planet's distance from its star.

The constant interaction between the planet's different spheres, like the hydrosphere and geosphere.

The composition of the planet's core.

The age of the planetary system.

Because Earth is the only planet with a geosphere.

Because it provides a direct model for how known geologic processes create specific surface features.

Because Earth's processes are identical to those on all other planets in the universe.

Because it allows scientists to travel to other planets to confirm their findings.

A similar geologic process, likely involving the flow of a liquid, occurred on Mars in the past.

Mars must currently have active rivers just like Earth.

The feature was definitely created by meteorite impacts.

Mars and Earth must have the same atmospheric composition.

The daily rotation of a planet on its axis.

An event that modifies a planet's solid surface, such as erosion or volcanism.

The gravitational pull a planet exerts on its moons.

The development of life on a planet.