Just imagine what humming birds are for.
They were sent to sing for us every morning.
Just imagine what trees are for.
They are real heroes of mankind.
Just imagine how hard to die without fighting back
Just to make people growing.
Just imagine what wind is for.
That it blows for living things to breathe the air.
Just imagine how beautiful our nature is.
Just imagine yourself being on our nature's situation.
Could you do what they did for mankind?