2. Repeat step 1 by placing the same types of bags in the middle of a mulch pile. Wet
the pile thoroughly with water.
3. Repeat step 1 by placing the same types of bags in the middle of the Leaf pile.
4. Place two types of biodegradable plastic bags, two types of nonbiodegradable plastic
bags, one paper bag, and one page of newspaper into five separate containers of tap
water. Then, place the same types of materials into separate containers of 15% (by
volume) saltwater.
5. Allow all the materials to stay in their environments for three months or longer.
Record the changes that occurred to the plastic bags, paper bags, and newspapers in
the different environments upon removal.