1) must, protect, we, nature.
We must protect nature
2) think, I, can, children, animals, help.
I think children can help animals
3) is, it, important, the Earth, to save.
It is imprtant to save the Earth
4) be in charge, should, we, of the planet.
We should be in charge of the planet
5) healthy, people, keep, must, our planet.
People must keep our planet healthy