Chapter #10 Flashcards
all the living things and nonliving things in a given area…
ecosystem
a nonliving thing in an ecosystem…
abiotic factor
a living or once-living thing in an ecosystem…..
biotic factor
the place within an ecosystem where an organism lives ; provides the biotic and abiotic factors an organism needs to survive and reproduce….
habitat
all the organisms of the same species that live in the same area at the same time…
population
all the populations living in an ecosystem at the same time….
community
the size of a population compared to the amount of space available…
population density
the way a species interacts with abiotic and biotic factors to obtain food, find shelter, and fulfill other needs…
niche
the demand for resources, such as food,water, and shelter, in short supply in a community….
competition
the condition that occurs when a population becomes so large that it causes damage to the environment…..
overpopulation
the act of one organism, the predator, feeding on another organism, its prey….
predation
a close, long-term relationship between two species that usually involves an exchange of food or energy….
symbiosis
a symbiotic relationship in which both organisms benefit….
mutualism
a symbiotic relationship that benefits one species but does not harm or benefit the other….
commensalsim
a symbiotic relationship in which one organism benefits and other is harmed….
parasitism
an organism that uses an outside energy source , such as the Sun, and produces its own food……
producer
an organism that cannot make its own food and gets energy by eating other organisms …….
consumer
a model that shows how energy flows in an ecosystem through feeding relationships..
food chain
a model of energy transfer that can show how the food chains in a community are interconnected….
food web
