global warming

Wind and sunlight are examples of ___________ sources of energy.

Governments need to limit the amount of greenhouse gases that is ____________ into the air.

Her grandpa is now suffering from ill health after many years of working in the _____________ industry.

The world produces more than two billion tonnes of solid __________ every year.

The burning of ____________ like coal and gas has led to an increase in the amount of CO2 in the atmosphere.