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Besides the Earth,which of the terrestrial planets and/or satellites of terrestrial planets shows evidence for the possible existence of liquid water flowing on its surface in the past?
HA
Depending on context, this can refer to Hyaluronic Acid, a molecule involved in skin hydration and cellular functions, or Hemagglutinin, a protein on the surface of influenza viruses responsible for binding the virus to the host cell.
pH
A measurement system designed to determine the level of acidity or alkalinity in water-based solutions, marked on a continuum from 0 to 14.
K
In the context of chemistry, often represents the equilibrium constant, symbolizing the ratio of product concentrations to reactant concentrations at equilibrium.
pH
A numeric scale used to specify the acidity or basicity (alkalinity) of an aqueous solution, with 7 being neutral, values below 7 acidic, and above 7 basic.
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