Desertification

Question 1

decertification definition

Answer 1

the process of turning into a dessert (sahel)

Question 2

human causes of desertification

Answer 2

overgrazing
over cultivation
deforestation
population growth
toyotarisation

Question 3

causes

overgrazing

Answer 3

too much livestock
all vegetation is eaten
ground susceptible to wind and water erosion

Question 4

causes

overcultivation

Answer 4

farming too intensively
no fallow periods
all nutrients lost

Question 5

causes

deforestation

Answer 5

land receives less nutrients
vulnerable to erosion as there is no interception
less stability because tree roots have been removed

Question 6

causes

population growth

Answer 6

more food production

more pressure on the land

Question 7

physics caused of desertification

Answer 7

rising temps
falling rainfall
flash floods
wind

Question 8

causes

rising temps

Answer 8

global temperatures increase
plants are harder to grow
reduces vegetation cover

Question 9

causes

falling rainfall

Answer 9

increasingly hard for vegetation to grow

ground more vulnerable to wind erosion

Question 10

causes flash floods

Answer 10

intense periods of rainfall erode topsoil

Question 11

causes

wind

Answer 11

wind erosion increases