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Very easy
Easy
OK
Super easy
A bit difficult
100
To break the law, for example, to kill someone
Commit a crime.
100
an act of washing your whole body by sitting or lying in water
Bath
100
feeling ashamed because you have done something that you know is wrong or have not done something that you should have done (adj)
Guilty
100
sport utility vehicle
SUV
100
a period of unusually hot weather
Heatwave
200
an offense against God or against a religious or moral law
Sin
200
to treat things that have already been used so that they can be used again
Recycle
200
the unhappy feelings caused by knowing or thinking that you have done something wrong (noun)
Guilt
200
to decide or say officially that something is not allowed
Ban
200
a large amount of water covering an area that is usually dry
Flood
300
to die because you have been underwater too long and you cannot breathe; to kill somebody in this way
Drown
300
a bicycle
Bike
300
a piece of equipment on a roof that uses light and heat energy from the sun to produce hot water and electricity
Solar panel
300
to reduce the size, amount or number of something
Cut down
300
a long period of time when there is little or no rain
Drought
400
Plastic objects that given when you shop and that can be used again
Reusable shopping bags
400
April 22nd it is celebrated
Earth Day
400
machine or an engine that receives its power from a wheel that is turned by the pressure of water, air or gas
Turbine
400
to use up or finish a supply of something
Run out
400
the coldest season of the year, between autumn/fall and spring
Winter
500
a piece of equipment producing a spray of water that you stand under to wash yourself; the small room or part of a room that contains a shower
Shower
500
to move from place to place or from person to person
get around
500
a sum of money that must be paid as punishment for breaking a law or rule
Fine
500
The place where the process of removing salt from seawater takes place
Desalination plants
500
water that falls from the sky in separate drops
Rain