A lot of our energy comes from non-renewable sources such ... so we need to look for ways to make renewable and sustainable energy resources. For example, wind, solar and hydro energy.

A lot of our energy comes from non-renewable sources such ... So we need to look for ways to make renewable and sustainable energy resources. For example wind, solar and hydro energy.

for example, are such sources that are constantly being replenished. Renewable energy sources are plentiful and all around us. Fossil fuels - coal, oil and gas - on the other hand, are non ...