because they use the water to irrigate the crops
Irrigation allows for farming in some desert areas.
The Nile River, the Rio Grande, the Colorado River of Arizona - all pass through desert areas.
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Columbia river and Mississippi river
Without water irrigation, the desert areas would be too arid, and food plants would be unable to grow as a farm crop.
The areas along the Nile River are quite lush.
Deserts and grasslands are west of the Mississippi River.
The River Thames does not directly support farming, as its primary role is as a waterway for transportation and recreation. However, the surrounding areas, particularly in the Thames Valley, are agricultural regions where farming thrives due to the fertile land and access to water resources. Farmers in these areas may utilize the river for irrigation and as a resource for livestock. Overall, while the river itself isn't a farming entity, it contributes to the agricultural viability of the surrounding regions.
Egypt was mostly desert and the watered areas were used fro farming, with no forests.
Most of the land is not arable, so it cannot be used for farming. In general it is used for construction, tourism (in the desert areas) as well as Date and camel farming
South
Yes, dragon flies live in the desert especially in areas where water is found - a river, oasis, etc.