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Unit 8

vocab

TermDefinition
Ecosystem A community interacting with the nonliving parts of its environment.
community All the populations of different species that live in the same place at the same time and interact with others.
population Organisms of one species that live in the same place at the same time and can reproduce.
biosphere All parts of earth where life exists, including air, land and water.
abiotic factor Nonliving physical features of the environment, including soil, water, temperature, air, light, wind and minerals.
food chain A model used to show how energy from food passes from one organism to another.
food web A model used to describe a series of overlapping food chains.
Ecological pyramid a model used to describe the transfer of energy through a community.
niche The role of an organism in an ecosystem. Limiting factor – Any biotic or abiotic factor that restricts the number of individuals in a population.
Limiting factor Any biotic or abiotic factor that restricts the number of individuals in a population.
Carrying capacity The largest number of individuals that an environment can support and maintain over time.
Predator The animal that catches and eats other animals.
Prey The animal getting eaten by the predator
Symbiosis A close relationship between two organisms that live together.
Mutualism A symbiotic relationship that benefits both partners.
Commensalism A symbiotic relationship that benefits one partner but not the other, no harm.
parasltism A symbiotic relationship that benefits the parasite but harms the parasite’s partner.
Producer (autotroph) Organisms that make their own food
Consumer (heterotroph) Organisms that must acquire their food
Herbivore Organisms that only eat plants.
Carnivore Organisms that only eat meat.
Omnivore Organisms that eat plants and meats.
Scavenger Organisms that eat animals killed by other animals.
Decomposer Organisms that break down dead plant and animal material and return it to the soil.
Water cycle The continuous movement of water in the biosphere through evaporation, condensation, precipitation.
Created by: vaka0712
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