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Chapter 18 Vocab

Ecology The study of the interactions of living organisms with one another and with their environment.
Biotic Describes living factors in the environment.
Abiotic Describes the nonliving part of the environment, including water, rocks, light, and temperature.
Population A group of organisms of the same species that live in a specific geographical area.
Community All the populations of species that live in the same habitat and interact with each other.
Ecosystem A community of organisms and their abiotic environment.
Biosphere The part of Earth where life exists.
Photosynthesis The food that plants make supplies them with energy.
Decomposers Organisms that get energy by breaking down dead organisms.
Scavengers Are omnivores that dead plants and animals.
Consumers Organisms that eat other organisms.
Producers Organisms that use sunlight directly to make food.
Herbivore An organism that eats only plants.
Carnivore An organism that eats animals.
Omnivore An organism that eats both plants and animals.
Food Chain The pathway of energy transfer through various stages as a result of the feeding patterns of a series of organisms.
Food Web A diagram that shows the feeding relationships between organisms in an ecosystem.
Energy Pyramid A triangular diagram that shows an ecosystem's loss of energy, which results as energy passes through the ecosystem's food chain.
Carrying Capacity The largest population that an environment can support at any given time.
Prey An organism that is killed and eaten by another organism.
Predator An organism that eats all or part of another organism.
Symbiosis A relationship in which two different organisms live in close association with each other.
Mutualism A relationship between two species in which both species benefit.
Commensalism A relationship between two organisms in which one organism benefits and the other in unaffected.
Parasitism A relationship between two species in which one species, the parasite, benefits from the other species, the host, which is harmed.
Coevolution The evolution of two species that is due to mutual influence, often in a way that makes the relationship more beneficial to both species.
Limiting Factor A resource that is so scarce that it limits the size of population.
Competition When two or more individuals or populations try to use the same resource, such as food, water, shelter, space, or sunlight.
Camouflage Bleeding in with the background.
Pollinator Is an organism that carries pollen from one flower to another.
Created by: Myles2418



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