We talked to Karla about what Melissa wrote. Karla commented on her picture :

Don't pollute the world, don't throw away cigarettes and plastic. Because if animals eat garbage, they die. If they die, there will be no animals left in the world. So don't litter. Garbage thrown into the sea remains there for 100 years. In the picture I have drawn a turtle which carries plastic to its baby and dies. When mothers die, there are no turtles left.

Karla Kamil, 6 years