Which Is NOT a Reason That We Suspect Mars Once

question 85

Multiple Choice

Which is NOT a reason that we suspect Mars once had liquid water on its surface?

• A) Mapping satellites have detected dry river beds.
• B) Rovers have detected minerals that must have formed in the presence of liquid water.
• C) Mapping satellites have detected outflow channels coming from impact craters.
• D) The observed presence of water ice in Mars's polar icecaps.
• E) All of the above are reasons.

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Definitions:

Buffer

A substance in a solution that tends to lessen the change in hydrogen ion concentration (pH) that otherwise would be produced by adding an acid or base.

Hydrogen Bonds

Weak bonds between partially positive hydrogen atoms and partially negative atoms (such as oxygen or nitrogen) in different molecules or within the same molecule.

Atomic Mass

The mass of an atom, typically expressed in atomic mass units (amu), representing the total mass of protons, neutrons, and electrons in the atom.

Ionic Bond

A chemical bond that occurs when two ions of opposite charges are linked together by transferring one or more electrons from one atom to the other.