5.3.1 ECOSYSTEMS

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What is an ecosystem?
all the organisms living in an area and all the non-living conditions found there
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Describe an ecosystem
dynamic, constantly changing/ biotic and abiotic factors influence
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What is a biotic factor?
living features of an ecosystem/ competition, predation, disease
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What is an abiotic factor?
non-living features of an ecosystem/ temp, pH, weather
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what is a producer?
an organism that produces organic molecules using sunlight energy
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What is a consumer?
am organism that eats other organisms
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What is a decomposer?
an organism that breaks down dead or undigested organic material/ bacteria and fungi
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what is a trophic level?
a stange in a food chain tat is occupied by a particular group of organisms
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Where does energy usually originate in an ecosystem?
photosynthesis
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Describe the flow of energy through an ecosystem
producers eaten by primary consumers which are eaten by secondary etc./ primary are mainly herbivores/ secondary carnivores/ food webs and chains show how energy is transferred
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How are energy transfers between trophic levels determined?
by comparing the energy taken in one trophic level with the energy availably in the next
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Card 2

Front

Describe an ecosystem

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dynamic, constantly changing/ biotic and abiotic factors influence

Card 3

Front

What is a biotic factor?

Back

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Card 4

Front

What is an abiotic factor?

Back

Preview of the front of card 4

Card 5

Front

what is a producer?

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