the best solution for protect the problem of environment

Now some scientist search some solutions to protect the problem of environment.they are :growing tree is the important thing that can reduce carbon dioxide in the air.more over it can control climate .anyway it is the home of animal and we can take it to make some materials. especially it can produce oxygen for the people and animals and preserve the ozone layer. animals relate with problems, too.they can make the environment vibrant. second solution is making the factory far away from the the city . because it is harmful to the health of the people. so if we make it far away , it will not harmful to the health.a good environment have to keep by people.some people never think about environment .because it is not their houses.so they never throw the rubbishes into the garbage bin.because of these some countries have bad environment.