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ecosystems
study for yearly exams
Term | Definition |
---|---|
abiotic | Non-living parts of ecosystems |
biotic | living parts of ecosystems |
consumer | cannot create own energy. relies on other oranisms for energy |
produers | can produce their own energy via photosynthesis |
decomposer | break down dead organisms, faeces + waste & returns the matter to the environment |
food web | a way to represent tranfer of energy as organisms feed off each other. made of many food chains. |
biomass pyramid | a way to represent the total amount of mass at each consumer level. |
biomagnification | increasing amounts of pollutants being digested as you move up a food chain |
deforestation | clearing of land by removing large numbers of trees. |
conservation | saving or protecing environments for future, eg national parks |
sustainablility | balancing our need for sources with the need to protect and conserve the environment |