What is the main characteristic of deserts in terms of rainfall and vegetation?

• Frequent rainfall and diverse vegetation

• Exceedingly slight rainfall and vegetation

• Moderate rainfall and abundant vegetation

• Continuous cover of forest or grass

Which river is an exception in arid regions where drainage reaches the sea?

• Yangtze

• Ganges

• Nile

• Amazon

What type of weathering is more significant in arid regions?

• Chemical weathering

• Biological weathering

• Mechanical weathering

• Erosional weathering

What are the common features in arid regions due to mechanical weathering?

• Caves and sinkholes

• Exfoliation, core stones, and tors

• Fjords and cliffs

• Archipelagos and atolls

What are desert streams characterized by?

• Deep and wide flow

• Rapid and constant flow

• Intermittent, short, and discontinuous flow

• Long, continuous flow

Which type of deserts are found in middle latitudes?

• Tropical deserts

• Polar deserts

• Topographic deserts

• Low latitude deserts

What is the main geomorphic agent in arid regions besides wind?

• Running water

• Glaciers

• Earthquakes

• Volcanic eruptions

What is the main type of true sand dune found in deserts?

• Parabolic dune

• Barchan or crescentic dune

• Star dune

• Transverse dune

What is the process of wind erosion that involves the natural sandblast action of wind-blown sand?

• Corrosion

• Attrition

• Deflation

• Saltation

Where are eolian deposits commonly found?

• Valleys

• Mountain tops

• Shorelines

• Caves