4 hot desserts Flashcards
where is the Sahara located
north africa, countries such as niger, libya, egypt and chad.
how little precipitation is required for an area to be classified as a dessert
less than 25cm a year
three animal adaptations to the dessert
nocturnal
small to fit in burrows
live in burrows
describe the dessert ecosystems
little rainfall dry infertile soil harsh enviroment lack of plantation
three reasons biodiversity is so poor in desserts
high population density by water
dry soil caused by climate change
animals have to migrate large distances to get to water
two plant adaptations to the desert
long roots in order to reach water
three development opportunities in the sahara
tourism
oil and gas extraction
solar energy
three challenges to development in the sahara
lack of water
hard to access
extreme temperatures (40 degrees)
what is dessertification
the gradual degradation of land, making it drier and less productive
two natural courses of desertification in the sahara
climate change
lack of rainfall
two human causes of desertification in the sahara
population growth (more pressure on the already restrained resources) over use of fertile land
three ways desertification can be reduced/managed
water management
soil management
planting more trees
