| A | B | 
| draught | a long period of dry weather | 
| reclamation | to recycle or make usable again | 
| aqueduct | a channel built by people to move water long distances | 
| conservation | to save something | 
| fog | a cloud that forms near the ground | 
| precipitation | water that falls from the air to the fround as rain, sleet, hail or snow | 
| water cycle | the continuous movement of water between earth's surface and the air as it changes from liquid to gas or solid to liquid | 
| reservoir | a man-made lake that is used to store water | 
| dam | a structure built across a stream or river to hold back water | 
| groundwater | water beneath the earth's surface | 
| awuifer | an underground layer of rock or soil which is capable of absorbing water | 
| watershed | name for an area of land in which water drains into a speciic river | 
| flood | occurs when water pours over the banks of a large body of water and spreads over land | 
| contaminate | means to dirty of pollute a material such as fresh water |