Because and because of

The environment is changing ____________ humans are burning fossil fuels.

• because

• because of

There is a decrease in air quality __________ petrol cars are emitting toxic gasses.

• because

• because of

Toxic gasses are being released into the air ____________ petrol cars.

• because

• because of

Crops are not growing ____________ pollution in the soil.

• because

• because of

There is less food in the market __________ crops cannot grow.

• because

• because of

She passed the test ……. her teacher.

• because

• because of

She passed the test ……. she had a good teacher.

• because

• because of

Sorry! I am late ……. the traffic.

• because

• because of

The company won’t hire him ……. he tested positive for drugs.

• because

• because of

It was difficult for me to get a loan …….my unstable employment.

• because

• because of