| A | B |
|---|
| wadi | a dry riverbed that fills with water when rare rain falls in the desert |
| poaching | Illegal fishing or hunting |
| steppe | A partly dry grassland often found on the edge of a desert |
| alluvial plain | an area built up by rich fertile soil left by river floods |
| phosphates | Chemical salt used to make fertilizer |
| rationing | making a resource available in limited amounts |
| nomads | A person who lives by moving from place to place to lead herds of grazing animals to fresh pasture |
| dry farming | agriculture that conserves water & uses crop growing methods suited for semi arid environments |
| ergs | Large areas of soft sand dunes in the Sahara |
| aquifer | an underground layer of rock through which water flows |
| refineries | A facility that turns petroleum into gasoline and other products |
| silt | Small particles of rich soil |
| oases | a fertile area that rises in a desert wherever water is regularly available |
| desalinization | The process of treating seawater to remove salts and minerals and make it drinkable |
| sedimentary rock | A type of rock formed when layers of sediment, or dirt from the ocean floor, are compress together and harden |
