Chapter Ten Flashcards
all the living things and nonliving things in a given area
ecosystem
a nonliving things 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 a short supply in a community
competition
condition that occurs when 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 no harm or benefit the other
commensalism
a symbiotic relationship in which one organism benefits and the 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
