Homework for EarthDay

My pictures :

a)Some Caracteristic :In my pictures there are few caracteristic,first caracteristic is Planet.In Picture(From the left) Childrens are keeping our planet(Earth) and in the picture(from the right) kids are cleaning the planet.
b)Different things on the given pictures: Well different things on then given pictures are text,keeping planet and cleaning planet.In the picture(from the left) there is text,but in the picture(from the right there is not).Second Caracteristic is Keeping planet.In the picture(from the left)kids are keeping planet becouse they know that on this planet they can be free and they can play free, but in the second there is not kids who keeping the planet.Third different caracteristic is cleaning the planet.In the picture(from the right)kids are cleaning our planet and i hope all kids in the world can to either,but in the pictere(from the left) kids aren't cleaning planet.
c)Well, i chose the picture from the right that picture with kids who cleaning the planet.The reason is very simply.I would like all people in the world to carry about this planet.I hope they will cleaning their towns,contry,e.t.c...