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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 organisms for energy. |
producer | can produce their own energy via photosynthesis. |
decomposer | break down dead organisms, faeces and waste, and returns the matter to the environment. |
food web | a way to represent the transfer 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 protecting environments for future, eg national parks. |
sustainability | balancing our need for resources with the need to protect and conserve the environment. |