hot deserts Flashcards
1
Q
what is the maximum amount of rainfall a desert can get and still be classed as a desert?
A
250mm
2
Q
describe the variation in temperature in hot deserts
A
extremely hot in the day and very cold at night
3
Q
describe the soil in deserts
A
extremely infertile
4
Q
why are desert soils infertile
A
there are no plants to decompose and provide nutrients to the soil. As well as this, excess soil isn’t blocked by plants so soil erosion occurs
5
Q
what sort of civilisations live in hot deserts?
A
indigenous people and tribal communities
6
Q
what is irrigation?
A
artificially watering crops
7
Q
why must desert communities use irrigation?
A
to water crops which otherwise wouldn’t survive in dry conditions
8
Q
A
