GENERAL KNOWLEDGE

Detailed explanation-1: -Deserts (arid lands/drylands) constitute about 35% of the land areas of the world and are typically characterized by rainfall scarcity, higher temperatures and evapotranspiration, lower humidity, and a general paucity of vegetation cover.

Detailed explanation-2: -The word arid means dry. The two colors on the map represent warm and cold Arid climates. If land has an Arid climate it is usually a desert. Most deserts are found along the 30 degree latitude line (north and south of the equator).

Detailed explanation-3: -Deserts are arid ecosystems that receive fewer than 25 centimeters (10 inches) of precipitation a year. Death Valley, California, above, receives fewer than 5 centimeters (2 inches) of rainfall every year.