Earth day!

Today is Earth day!
Now, lets see, what have I done in such away that I saved earth?
*Stares down at the list of things that I had done today*
Nothing
*Blink, blink?*
Ok, so I didn't do anything.
Well, at least I did something that I should be proud of. I just flipped through my english workbook. My teacher returned it to my class so that we could do the corrections in it, and I had no corrections.
And, my chinese recently improved my wuite alot of marks. My previous 3 spelling marks were 100, 100, 98.
So maybe I did something, because they say if you care about saving the earth, then all you have to do is just to study hard and become a useful person in the future.
Now all I need to do is just to perk up in areas expertising maths and science.