the study of the interaction of organisms with their environment
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Environment
DEFINE
ENVIRONMENT
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Environment
an organism's surroundings, which are affected by biotic and abiotic factors
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Biotic/Abiotic Components
DEFINE
BIOTIC/ABIOTIC COMPONENTS
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Biotic/Abiotic Components
biotic:living components of an environment - such as the effect of competition with other animals/plants on an organism
abiotic:non-living components of an environment - such as the effect of the climate on an organism
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Biosphere
DEFINE
BIOSPHERE
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Biosphere
a small area of the Earth and it's atmosphere in which all living organisms can survive - this extends to a few metres below the ground, and a few kilometres into the atmosphere
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Population
DEFINE
POPULATION
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Population
a group of organisms of the same species which can interbreed in a habitat
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Community
DEFINE
COMMUNITY
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Community
all the different populations of species interacting and living in a habitat
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Ecosystem
DEFINE
ECOSYSTEM
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Ecosystem
a community of living organisms and the abiotic factors which affect them
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Habitat
DEFINE
HABITAT
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Habitat
the place where an organism lives
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Microhabitat
DEFINE
MICROHABITAT
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Microhabitat
a habitat within a larger habitat - for example, a under a log in a forest
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Niche
DEFINE
NICHE
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Niche
an organism's role, function or position in an ecosystem.
*No two species can occupy the same niche
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Biome
DEFINE
BIOME
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Biome
areas which have similar climactic conditions, therefore giving rise to similar plants and animal species
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