Energy

It is so difficult problem but we must think seriously about this problem. We use much energy through our life and we can't live without energy. However, we use much enough energy, so we should think about the way of saving energy. These days many products are "Eco" for earth. It uses less energy than the other products, so it is one of the ways to save energy. Also we can try to save it through our daily life. For example we turn off the light of products that use electricity, when we don't use it. It is very easy isn't it? We can keep energy if we care a little things and think about good things for the earth.