Question

question 9. the fall of the barometer (decreasing pressure)...(select all that apply) a. occurs when wind and rain happen together. b. denotes thaw in frosty weather. c. presages frost in winter. d. denotes high wind. question 10. the statement its motion upwards indicates the approach of fine weather, its motion downwards indicates the approach of foul is associated with... a. the rise of the barometer (increasing pressure) b. the barometer unsettled (unsteady pressure) c. the fall of the barometer (decreasing pressure)

Explanation:

A falling barometer (decreasing pressure) often indicates unsettled weather conditions. Wind - rain combinations are common with decreasing pressure. Frost in winter and thaw in frosty weather are not directly related to a falling barometer in a simple way. High wind can be associated with pressure changes but not the most typical association with a falling barometer.

Answer:

A. occurs when wind and rain happen together