Respuesta :

Answer:

density is correct

Explanation:

A. density.

High- and low-pressure areas leading to air movement happen when there are differences in density.

Explanation;

Atmospheric pressure or air pressure is the force exerted by air above a surface as gravity pulls it to Earth.

Air pressure decreases with an increase in altitude. Atmospheric pressure is measured using a barometer and is an important indicator of weather.

When a low-pressure system moves into an area, it causes cloudiness, wind, and precipitation. High pressure systems on the other hand causes a fair, calm weather.

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