small particles of rich soil
area built up by rich fertile soil left by river floods
chemical salt used to make fertilizer
illegal fishing or hunting
facility that turns petroleum into gasoline and other products
dry riverbed that fills with water when rare rains fall in a desert
large areas of soft sands and dunes in the Sahara
fertile area that rises in a desert wherever water is regularly available
agriculture that conserves water and uses crops and growing methods suited to semiarid environments
making a resource available in limited amounts
process of treating seawater to remove salts and minerals and make it drinkable
Please allow access to your computer’s microphone to use Voice Recording.
We can’t access your microphone!
Click the icon above to update your browser permissions above and try again
Reload the page to try again!
Press Cmd-0 to reset your zoom
Press Ctrl-0 to reset your zoom
It looks like your browser might be zoomed in or out. Your browser needs to be zoomed to a normal size to record audio.
Your microphone is muted
For help fixing this issue, see this FAQ.