Send It On is a song that is about going green. It is important that by going green we are saving the earth.
Think Green is about instead of being inconsiderate about what is going on around you, you should think about how to make the world a better place. If we don't the world will end up in a wasteland.
It's not too late is about how we still have time to make the world a better place.
The 3 R's is about 3 easy ways to be green.