Landfills are designed to isolate trash from the environment.
It helps trash to decompose. It breaks up the trash so that the garbage does not pollute our air. Landfills have a line of soil underneath them so they do not pollute the ground and contaminate it.
I didn't know that we were supposed to recycle our garbage till now in fourth grade.If you recycle your garbage we can have more recycled things like glass,paper,plastic,cans.
A good place to find ot more things about landfills is a site called the World Book. the name of the artical is called Landfill.
A good book about landfills is a book called Garbage. The author is Evan and Janet Hadingham. The publishing company is Simon and Schuster Inc., New York, 1990.