africa
agriculture
arid
aridity
black
black man
closed
cultivate
culture
desert
desertification
despair
development
drought
dry
dune heap crisis
ecological
ecology
elapsed
environment
farmer
farming
finger
fist
flow
global warming
hand
heat
hot
hunger
impotence
male
mali
mauritania
niger
power
problem
rain
sahara
saharan
sahel
sand
sanded
sanding
sandstorms
senegal
sustainable
sustainable development
thirst
tradition
traditional
water shortage