A strong movement of water in one direction.
CURRENT
The steep side of an area of high land.
CLIFF
A wall built across a river to stop the water from flowing, especially in order to create a lake or to help to produce electric power
DAM
A long period of time when there is little or no rain and crops die.
DROUGHT
An area of the coast where the land curves inwards.
BAY
A strong movement in a river, stream or sea that makes the water move round and pulls things under.
WHIRLPOOL
An animal that is caught by another animal and eaten.
PREY
The natural process in which one living thing is eaten by another, which is then eaten by another, etc
FOOD CHAIN
