Составить 5 предложений из слов: protect,waste,pollute,environment,protection.

1) We must protect nature from pollution and contamination.
2) The humans must recycle waste and garbage.
3) Before now, the people lived in harmony with nature and didn`t pollute it.
4) Let`s leave in peace with our environment!
5) Environmental protection is is one of the important things on the Earth.