An area drained by a major river and its tributaries.
Drinking water source provides information about access to improved or unimproved drinking water sources available to segments of a country’s population.
Using small pipes that slowly drip water just above the ground to conserve water to use for crops.
A long period without rain or with very minimal rainfall.
Adaptations of desert plants and animals to evade dry conditions by migrating (animals) or being active only when wet conditions occur (plants and animals).
Adaptations of desert plants and animals to tolerate dry conditions through water storage and heat loss mechanisms.
Planting and harvesting according to the seasonal rainfall cycle.