POLS 131 Midterm: Exam 3 Study Guide
Document Summary
Any group of plants, animals, and/or non living things interacting within their external environments. A community of organisms in a given location, along with nonbiological factors, and the interactions between them. Notions of interactions - more than just what"s in it, but also their relationships. Producers > primary consumers > secondary consumers > decomposers. Sustainability: meeting the needs of a current generation without foregoing the needs of a future generation. Pollution: a substance that is in an ecosystem that does not belong there naturally (may also be an excess of something) Cap and trade: when there is a set amount of allowed emissions that is split up between industries, however if they do not use the full amount, they can sell/trade it with another industry. Cfcs (chlorofluorocarbons): break down the ozone and is commonly found in air conditioners, fridges, and aerosols.
