Question

why do regions near 30 degrees latitude often have desert climates? (1 point)
ocean currents bring moisture to these latitude bands
polar jet streams block rainfall in these areas
warm winds blow directly from the equator to these regions
cold, dense air sinks and creates a high - pressure system with clear skies

Explanation:

To determine the correct answer, we analyze each option:

• Option 1: Ocean currents bringing moisture would not lead to desert climates, so this is incorrect.
• Option 2: Polar jet streams are not related to 30° latitude desert formation, so this is incorrect.
• Option 3: Winds from the equator do not directly cause desert climates at 30° latitude.
• Option 4: At around 30° latitude (both north and south), cold, dense air sinks, creating high - pressure systems. High - pressure systems are associated with clear skies and little precipitation, which is a key factor in the formation of desert climates.

Answer:

D. Cold, dense air sinks and creates a high - pressure system with clear skies