Ecosystem All the living and nonliving things in an area Biotic Factors Living parts of an ecosystem Populations Abiotic Factors Nonliving parts of an ecosystem Communities All the populations living in an area Habitat All the organisms of a Place where an organism species living in the same lives area Niche Role of an organism in the community Deserts A dry sandy region with little rain Tundra A treeless area that has permanent frozen soil Prairie Flat or rolling area that is treeless Rainforest A dense evergreen forest with a lot of rainfall Consumers Animals that need to eat to survive Organisms Producers Produces food for others Decomposers Organism that breaks down the dead Food Chain An individual form of life Is the path energy takes from producers to consumers to decomposers Food Web Shows the relationship between al of the species in a community Light Makes things visible Energy Captured from sunlight. We get it from food Soil Composition Different minerals that make up soil Temperature The degree of hotness or coldness Carnivore Animals that eat other animals Predator Living things that hunt other living things for food Scavenger Feed on the remains of dead animals Mutualism Herbivore Eat producers (plants) Omnivore Eats both animals and plants Prey The ones that are hunted Symbiosis Relationship between two kinds of organisms that lasts over a period of time Parasitism Relationship between two Relationship in which one kinds of organisms that kind of organism lives on benefits both of them or in another organism and may harm the organism Commensalisms Pollution Relationship in which one Contamination of air, organism benefits from water, or soil another without harming or helping Extinction The species has died out completely Endangered Species A species is in danger of becoming extinct Pesticides A chemical to kill pests Recycling Erosion Using reused things to help stop the loss of topsoil Acid Rain Rain that contains high levels of acid chemicals Threatened Species Species may become endangered Urban Growth The population per square mile (city) Mining Extraction of valuable minerals from the Earth Hunting Pursuit and killing of a wild animal Renewable Resources it is naturally reproduced Non-renewable Resources Cannot be naturally reproduced