| A | B |
|---|
| pollution | introduction of harmful levels of chemicals into the environment |
| sustainability | society achieves this when they use resources wisely |
| ecology | studies how living things interact with each other and the nonliving environment |
| agricultural revolution | time period when plants and animals were domesticated and human pop grew rapidly |
| nonbiodegradable | pollutant that cannot be broken down by natural processes |
| biodiversity | number and variety of species in an area |
| values | principles or standards we consider important |
| experimental | group that receives the experimental treatment |
| control | group that does not receive the experimental treatment |
| hypothesis | testable explanation |
| law | theory proven to be true |
| protista | algae belong to this kingdom |
| prokaryotes | organisms without a nucleus |
| photosynthesis | producers pull carbon dioxide out of the atmo and combine with water during |
| fertilizers | excessive use of this on lawns can affect the N and P cycles |
| fossil fuels | underground carbon sources composed of plants and animals that died millions of yrs ago |
| secondary | type of succession where soil previously existed |
| water cycle | continuous movement of water through the air, land and water |
| denitrification | when bacteria convert nitrates back into nitrogen gas |
| global warming | caused by the burning of fossil fuels |
| bioremediation | changing of a harmful substance into a nonharmful one |
| coevolution | two species changing genetically in response to a long term interaction |
| renewable resource | ex of building wooden furniture |
| biodegradable material | newspaper |
| independent | variable that a scientist manipulates |
| ecosystem | all the living and nonliving things with which organisms interact |
| experiment | an activity designed to test a hypothesis |
| hydrogen | when a solution is acidic it has a high concentration of this |
| stomata | tiny pores where a plant releases excess water vapor and where carbon dioxde and oxygen enter and leave |
| abiotic | rocks, soil and water are all examples of.. |
