1. solar energy can be used to heat water for homes
2. within 20 years fossil fuels will be replaced by renewable sources
3. this time next month we will be using solar energy for heating water
4. fossil fuels are limited and harmful to the enviroment
5. climate change cause the burning oil and coal in order to produce energy
6. last year, we fit solar panels into our house to provide solar energy
7. every day we rely on energy to provide us electricity, hot water and fuel
8. will electric cars be more popular than petrol cars in the next 15 years