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| a complex system where living and non living things interact with each other |
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| Example of an interaction |
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| A bear eats a fish for food |
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| the strength required to live |
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| where we live that protects us from the elements |
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| makes food. Eg. plant. Get energy from the sun |
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| an organism that feeds on plants and other animals eg. animals |
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mushrooms/worms
they cause living things to decay |
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| shows how energy is passed between living things in an ecosystem |
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| a system of interdependent food chains |
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| An energy pyramid is a graphical model of energy flow in a community |
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| things that keep down the population of a species |
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| an introduced species that takes over. Has no natural predators. Eg. zebra mussels/lamprey |
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| animals fighting over basic needs |
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| able to be used without being completely used up or destroyed |
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| eg. oil spills, pollution causing acid rain destroying habitats |
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| foresters carefully selecting trees,hybrid cars, recycling,solar and wind energy |
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