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Biology Definitions

QuestionAnswer
Alien Species A species that is accidentally or deliberately introduced to a new location, usually as a result of human activity.
Aquatic
Biodiversity The number and variety of organisms found in a specific region.
Biomass The total mass of living organisms in a defined group or area.
Cellular Respiration A process that releases energy from organic molecules, especially carbohydrates, in the presence of oxygen.
Community All the populations of the different species that interact in a specific area or ecosystem.
Heterotroph
Niche The role and function of an organism or species within an ecosystem.
Omnivore An organism or species that eats both plants and animal.
Sustainable Use of Earths resources, including land and water, at levels that can continue forever.
Bioremediation The use of living organisms to clean up contaminated areas naturally.
Acidic The level of acidity is very high.
Terrestrial An ecosystem that is land based.
Equilibrium The balance between opposing forces.
Fermentation A process that releases energy from organic molecules, especially carbohydrates, in the absence of oxygen.
Competition When two or more organisms compete for the same resource in the same location at the same time.
Ecosystem All the interacting parts of a biological community and its environment.
Autotroph
Habitat The area in which organisms or species are located.
Abiotic The non-living parts of an ecosystem.
Producer An organism that can make its own food.
Biomagnification A process in which the concentration of ingested toxins increases as it moves from one trophic level to the next.
Basic
Predation A relationship between two different species in which one species feeds off another.
Mutualism A symbiotic relationship between two species in which both species benefit from the relationship.
Carrying Capacity The size of a population that can be supported indefinitely by the available resources and services of an ecosystem.
Eutrophication A process in which nutrient levels in aquatic ecosystems increase, leading to an increase in the populations of primary producers.
Native Species A species that is meant to be at that certain habitat
Biome
Carnivore An organism that eats only other animals.
Biotic The living parts of an ecosystem.
Symbiosis Interaction between members of two different species that live together in a close association.
Consumer An organism that cannot make its own food, so it eats other organisms to survive.
Keystone Species A species that can greatly affect population numbers and the health of an ecosystem.
Photosynthesis A process that changes solar energy into chemical energy.
Parasite An organism whose niche is dependent on a close association with a larger host organism.
Bioaccumulation A process in which an organism ingests materials, especially toxins, faster than it eliminates them.
Invasive Species A species that can take over half the habitat of native species or invade their bodies.
Dominant Species A species that is so abundant that it has the biggest biomass of any community member.
Biosphere The regions of earth where living organisms exist.
Herbivore An organism that eats only plants.
Trophic Level A category of organisms that is defined by how the organisms gain their energy.
Decompose An organism that breaks down nutrients in decaying bodies and wastes of organisms, and returns nutrients to abiotic parts of an ecosystem.
Population All the individuals of a species that occupy a particular geographic area at a certain time.
Created by: caitlynkummer