On Mars, There Is Evidence for the Presence of Water

question 51

Multiple Choice

On Mars, there is evidence for the presence of water in the form of______.

• A)ice only.
• B)liquid water only
• C)snow only
• D)ice and liquid water but not snow
• E)ice, liquid water and snow

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Definitions:

Oldest Unit

In geology, this refers to the earliest-formed rock or stratum in a sequence, indicating the beginning of the geological history of an area.

Bedrock

The solid rock layer beneath the surface soil and loose materials, forming the foundation for the Earth's surface landscapes.

Steep Mountain Front

A steep mountain front is a pronounced topographical feature where the slope of a mountain is dramatically steeper, often marking the boundary between differing geological formations.

River

A large, natural stream of water flowing in a channel to the sea, a lake, or another such stream.