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Transcript
10% Rule Only 10% of the energy present at one feeding is passed on to the next feeding level Commensalism A symbiotic relationship between species in which one species is helped and the other is unaffected Energy Pyramid Diagram that demonstrates the flow of energy through a food chain Mutualism A symbiotic relationship between two species in which both species benefit Parasitism A symbiotic relationship in which one organism (parasite) benefits and the other (the host) is generally harmed but not killed Symbiosis A close relationship between two species Producer An organism that can make it’s own energy through photosynthesis or chemosynthesis Primary Consumer In a food chain, organisms that eat producers Secondary Consumer In a food chain, an organism that feeds on producers (plant-eaters); also called a predator Tertiary consumers In an ecosystem, a predator that feeds on other predators Decomposers An organism that breaks down tissue and releases nutrients and carbon dioxide back into the ecosystem Omnivore an organism that eats both plants and animals. Herbivore An organism that feeds only on plants Carbon Cycle The continual transfer of carbon dioxide and oxygen between living things and the environment Water Cycle Cycle in which water moves through the environment, through the process of evaporation, condensation and precipitation Nitrogen Cycle In the environment, the movement of nitrogen between the living and non-living parts of an ecosystem Natural Selection Process by which organisms change over time as those with traits best suited to an environment pass their traits to the next generation. Survival of The Fittest A natural process resulting in the evolution of organisms best adapted to the environment Food Chain Series of stages that shows the transfer of energy from producers to consumers to decomposers Food Web In an ecosystem, arrangement of several overlapping food chains Predator Animal that kills and eats other animals Host Organism that supports a parasite Parasite Organism that feeds on cells, tissues or fluids of another living organism