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Bio CH32

Biology CH32 Solving Ecological Problems

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