which of the following are early clues that signals an earthquake may occur? select all that appyly.

Changes in magnetic properties of rock.

movement of magma
decrease in well water levels

increase in sulfur dioxide and carbon dioxide ground emissions

increases in radon gas in groundwater

foreshocks​

Respuesta :

Answer:

Explanation:

The following answers apply;

Changes in magnetic properties of rock

Decrease in well water levels

Increases in radon gas in groundwater

Foreshocks  

These other choices may be good indicators of an imminent volcanic eruption;

Movement of magma

Increase in sulfur dioxide and carbon dioxide ground emissions

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Answer:

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Explanation: