Being careful shows initiative for the environment around you.
John is driving down the road and just finished drinking a soda.
John wants to get rid of the empty soda can.
John pulls over on the side of the road and carefully throws the soda in the recycling bin.
John thoughtlessly throws the soda can out the window as he continues driving.
John keeps his neighborhood nice and clean and contributes to a healthy environment.
The soda can adds to the litter on the street and makes John's neighborhood more trashy and ugly.