we have to protect sones of buildings from..............
global warming
Oxygen gas
acid rain
The fossil fuel are formed under the earth's surface from dead plants or animals, after a.............Period of time
Very long
long
short
The fuel must be ...... at first to move a car.
cooled
burned inside the car engine
freezed
car engine can be operated by......
Gasoline only
Coal only
Gasoline and natural gas.
which of thefollowing sentences describes the most important thing for the driver, during driving a car for a long distance
The fuel tank contains enough amount of gasoline
The presence of a radio
The presence of a speedometer
The genentor inside the elecric power station, turns................
Kinetic energy into electrical energy
Elenrical energy into kinetic energy
Steam into water
the devices in the electric power station which opeated by steam are...............
the cables
the tubes.
the turbines
we have to ............, to produce steam inside the electric power station.
freeze the water
Heat the water
Cool the water
when carbon dioxide gas inceases, the earth’s tempeature .....
Decreases slowly
Increases slowly
doesn't change
The two main types of fuel are..............
The sun and the moon
Fossil fuel and biofuel
Water and wind