The planet earth is what we have where we humans can live. There is no other place that is given to us where we can be able to have all the necessities we have for us to live doing what we know to do. Even if we explore the sky and the bottom of the sea but there is no place that can be an alternative for us to live in. Many people are trying to find another habitable place but they cannot find.
The planet earth is the only perfect place where everything is provided for life to be sustained. If you will know all the feature of the earth from its gravity to the size and the axis it has all is in a perfect position so that life can be nurtured. If one is altered then it is very dangerous. That is why the planet should be protected because if nothing is done to address the concerns then there can be a problem that would just become worst in the future.
As you have already read the ten things that you can do to help the planet earth then it is up to you if you will accept it or put it into practice. Even if this campaign goes continually if no one would be able to do it then it is just meaningless. So let us make the time that we spent knowing it is worthwhile by putting it into practice is a good citizen of the earth.