Question

question 4 1 pts why are there many deserts at 30° latitude? dry air rises at this latitude. dry air sinks at this latitude. dry air cools at this latitude. dry air warms at this latitude.

Explanation:

At 30° latitude, in the Hadley cell circulation pattern, warm moist air rises near the equator, cools, and releases moisture. As it moves towards 30° latitude, it descends. When air sinks, it compresses and warms adiabatically (no heat exchange with surroundings). This warming reduces the relative humidity (since the capacity of air to hold moisture increases with temperature when warming adiabatically), making the air dry. Dry air leads to less precipitation, which is a key characteristic of deserts.

Answer:

Dry air sinks at this latitude.