Some trash breaks down and goes back to the Earth. It turns into soil. That means it is biodegradable. But the most important thing to know about trash is that some of it stays around forever. How do you know which trash is biodegradable and which isn't? This activity will help you learn.

You will need

• A tool to dig with.
• 4 flat sticks you can write on; popsicle sticks will be okay.
• A marker.

• A pear or apple core
• A leaf from a green leafy vegetable like spinach or lettuce
• A piece of plastic packaging; a plastic bag will do just fine.
• A piece of styrofoam.

Here's what you do:

1. Use the marker to write the names of the four pieces of trash on the flat sticks.
2. Take the sticks, the tool you are going to dig with, and the four pieces of trash outside into your backyard or schoolyard. Find a spot to dig a few holes. Try to find a spot that has warm, moist soil. Warm, moist soils breaks down biodegradable trash faster. Be sure to ask your parents or teachers if it's okay to dig there.
3. Dig four holes that are wide and deep enough to put something in
4. Put each of the four pieces of trash in a separate hole. The fruit core goes in one hole; the vegetable leaf in the second hole; the plastic packaging in the third hole; the styrofoam in the last hole.
5. Fill the holes back up with dirt.
6. Mark each hole with the stick that matches what you buried in the hole.
7. Mark the date you buried the four pieces of trash on the calendar; mark a day a month later to go back and dig them up.
8. On the date marked, go back and dig up the four pieces of trash.

Questions to Answer

• Did you find all the pieces of trash?
• Which pieces were not there or almost all gone?
• Which pieces of trash were still there?
• Which types of trash are biodegradable?
• Which aren't?
• Which kinds of trash are better for the Earth?
• How can we change what we do with packaging and trash to make things better for the Earth?