Iceland uses ______ ______ from hot underground water to generate electricity.

_________ power plants use organic materials to generate electricity.

One of the great thingsabout renewable energy is that it is _______ around the world.

Scientists are still trying to _______ ______ ways to make solar panels affordable for everyone.

These eggs smell really bad; they must be _________.

Natural gas has a chemical added to it that people can smell a _________ __________.

________ _________, such as solar power, pollutes the environment less than oil and gas.

LED lightbulbs use 75% less energy than ________ ones.

Daniel _________ his windows with double-glazed ones and now his house is much warmer in the winter.

Sarah changed her hair colour from brown to blonde with eco-friendly _____.

Peter's electricity bill has been much cheaper since he _____ solar panels on the roof of his house.

Rachel used a pair of ________ to cut the fabric.

Frank uses oil to __________________ during the cold winter months.

Hydroelectric plants use moving water to _______ ___________.

Michael decided to ______ _______ ________ _____ in his house because he was feeling cold.

Jack won a gold medal in the _________ championship; he came first in the 100 metres race.

Using LED light bulbs in your house is a good way to ________ ________ because because they are more efficient.

It was so hot that Tara turned the air conditioning on in order to _________ ______ _______.

__________ ________ _______ last much longer than ordinary bulbs.

The blades of ______ _______ turn in the wind to generate electricity.