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Bio CH32
Biology CH32 Solving Ecological Problems
| Term | Definition |
|---|---|
| acid | liquids that have pH values lower than 7 |
| acid rain | rain that has a pH between 1 and 5.5 |
| base | liquids that have pH values greater than 7 |
| biodegradable | something that can be broken down by microbes into harmless chemicals and used by other living things |
| endangered | a species of living thing that is in danger of becoming extinct |
| erosion | the wearing away of soil by wind and water |
| fossil fuel | the remains of organisms that lived millions of years ago |
| greenhouse effect | the trapping of heat near Earth’s surface by a layer of carbon dioxide |
| natural resource | any part of the environment used by humans |
| ozone | a molecule made up of three oxygen atoms that forms a layer high above Earth’s surface |
| pesticide | chemicals used to kill unwanted pests |
| pollution | anything that makes the surroundings unhealthy or unclean |
| radon | a gas found in the ground that gives off radiation |
| recycling | the reusing of resources |
| sediment | material that settles on the bottom of a body of water |
| smog | a combination of smoke and fog |
| threatened | a species of living thing that is close to being endangered |
| toxic | poisonous |