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Topic 4

TermDefinition
Niche Includes how an organism obtains its food, the type of food the organism eats, and what other organisms eat.
Competition The struggle between organisms to survive as they use the same limited resources.
Predation An interaction in which one organism kills another for food or nutrients.
Symbiosis Any relationship in which two species live closely together.
Commensalism A relationship in which one species benefits and the other species is neither helped nor harmed.
Mutualism A relationship in which both species benefit
Parasitism A relationship that involves one organism living with, on, or inside another organism and harming it.
Succession The series of predictable changes that occur in a community over time.
Pioneer species The first species to populate an area
Biodiversity The number and variety of different species in an area
Keystone species A species that influences the survival of many other species in an ecosystem.
Extinction The disappearance of all members of a species from earth.
Invasive species Human activities can also introduce non-native species.
Ecosystem services The benefits humans receive from ecosystems.
Ecology The study of how organisms interact with their environment.
Natural resource Anything naturally occurring on the environment that humans use.
Conservation The practice of using less of a resource so that it can last longer.
Sustainability The ability of an ecosystem to maintain biodiversity and production indefinitely.
Ecological restoration The practice of helping a degraded or destroyed ecosystem recover from damage.
Created by: user-1870851
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