GENERAL GEOLOGY

Detailed explanation-1: -When landforms on different rocky planets look similar, it is evidence that they may have been formed by the same geologic process. The channel on Mars may have been caused by flowing water or flowing lava.

Detailed explanation-2: -Landforms can provide evidence about the past because they remain after the geologic process that formed them stop happening. Models perfectly represent the natural processes being investigated.

Detailed explanation-3: -Geologic Processes involve interactions of the atmosphere, biosphere, cryosphere, hydrosphere, and lithosphere. The USGS defines Geologic Processes as all types of processes affecting geologic structures.

Detailed explanation-4: -They are then presented with new information: conglomerate rock was found near the base of the channel on Mars. This evidence strongly supports the claim that the channel was formed by flowing water.

Detailed explanation-5: -Answer and Explanation: The most likely geologic process to form the channel on Mars is continental drift, the same process that forms modern channels like the mid-Atlantic channel or the African Rift Valley. As the continental plates of Mars pull apart, they open up massive valleys that can be seen from space.