| A | B |
|---|
| archaeologist | What do you call a scientist who digs up buried objects and studies them to learn about the people who left them? |
| four | How many pounds of trash does the average American produce a day? |
| Environmental Protection Agency | What do the letters EPA stand for? |
| bury, burn, recycle, use less | List four ways the EPA says to deal with trash. |
| land fill | What is a large hole with a liner where trash is kept to prevent the trash from harming the environment? |
| covered over, planted with grass, made into a park or recreational area | What can be done with a landfill once it is full? |
| layers of soil | What is the trash buried under? |
| incineration | Getting rid of trash by burning is called? |
| ash, heat and smoke | Burning trash turns it into what? |
| electricity | What can you produce from the heat of burning trash? |
| from trash littering the water | Why do animals that live in or near the ocean become ill? |
| hazardous wastes | What do we call wastes that can pollute the environment even in small amount? |
| pollution | When people add unwated material to the environment, they are causing what? |
| littering | What reduces natural resources and harms the environment? |
| trees | What is paper made from? |
| petroleum | What is plastic made from? |
| 1968 | What year was the first aluminum recycling program begun? |
| 1970 | What year was the first Earth Day held? |
| 342 BC | What year were recycled stones first used in Greece? |
| plastic soda bottles | What is PET used to make? |
