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Terms in this set (28)
Is the study of how living things interact with each other and the environment around them
Is a group of organisms interacting with their environment as a unit.
Is all the external factors that influence an organism.
the place where an organism lives.
Is the part of the planet that contains the living organisms. Aquatic = sea creatues Terrestrial = dry 1and
Different populations of plants & animals in an ecosystem.
role of an organism.
is when organisms of different species rely on each other for a resource. Eg: Bee gets nectar and pollinates the flower.
non-living features that determine what can grow in the area so then determines which producers are there & as a result which consumers are found there.
Is the struggle by 2 or more organisms for a resource that is in short supplý the habitat, such as food, space, access to mates and shelter.
the struggle between organisms of the same species for a limited rescre.
the struggle between organisms of different species for a limited resource.
Is the act of one organism killing another organism for food
Is a close relationship between 2 organisms of different specica in which at te one of them benefit.
an organism that feeds on a host, generally causing harm
Is a sequence of organisms where each one is eaten by the next member of the chain
Pyramid of numbers:
is a bar diagram indicating the relative numbers of organisms in a food chain.
each feeding stage in the food chain.
Every food chain starts with a producer, which is an organism that makes its own food (autotroph)
An organism that eats another organism for food
possesses that better suits the organism to its environment and increases is a characteristic or feature that an organism its chances of survival,
Any harmful addition to the environment.
convert Nitrogen gas from the atmosphere to Nitrates.
break down dead animals and plants to release ammonia.
convert ammonia to nitrates.
convert nitrates to Nitrogen gas.
observing whether an organism is absent or prestent.
using quantities/numbers/amounts to analyse organisims
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