Because and because of

The environment is changing ____________ humans are burning fossil fuels.

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

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

Crops are not growing ____________ pollution in the soil.

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

She passed the test ……. her teacher.

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

Sorry! I am late ……. the traffic.

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

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