The storms or frontal systems develop where

air is rising
atmospheric pressure is low
at the equator and in the mid-latitudes
All of the above

The correct answer is D. All of the above.

Storms or frontal systems develop where air is rising, atmospheric pressure is low, and at the equator and in the mid-latitudes.

  • Air rises when it is warm and less dense than the surrounding air. This can happen when the sun heats the ground, causing the air near the surface to warm and rise. It can also happen when cold air moves in from the north, pushing the warm air up.
  • Atmospheric pressure is the force exerted by the weight of the air above a given point. Low pressure areas are associated with rising air, while high pressure areas are associated with sinking air.
  • The equator and the mid-latitudes are the two regions of the Earth where most storms occur. This is because these regions are where the Earth’s surface is warmest and the air is most unstable.

When air rises, it cools and condenses, forming clouds. If the air rises high enough, it can form thunderstorms, hurricanes, or other types of severe weather.