there is one mistake in each sentence . find and correct
1) the burning of fossil fuels is harmful for the environment àn public health
2)most households are use natural gas for cooking right now
3) solar power is by far the more popular renewable energy source
4)you should always turn the lights on when you leave the room
5) using solar energy instead fossil fuels can help reverse the effects of global warming
6) many people living in rural areas use biogas to cook and heating
7)renewable energy sources are available,clean and safety to use 
8) one of the ways you can save energy in your home are to use energy saving light bulbs