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| A system of all the living (biotic) and non-living (abiotic) things in an environment. |
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| Group of ecosystems with similar climates and organisms. |
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| A creature that eats both other animals and plants. |
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| An animal that eats other animals. |
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| Organism that obtains energy by feeding on other organisms. |
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| Organisms that can make its own food. Example: plants are producers. |
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| Organisms that break down wastes and dead organisms. Fun and Bacteria. |
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| Organism that eats only plants. |
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| A specific environment that provides things an organism needs to live. |
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| A series of events where one organism eats another organism to obtain energy. |
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| Energy from the sun, also called "electromagnetic energy." |
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| A model that shows the flow of energy through an ecosystem from producer through top level consumer. |
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| Consumers at the top of the food chain. These eat primary and secondary consumers. |
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| A change in an organism's environment. |
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| Hormones, disease, malnutrition that affect an organism from the inside. |
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| Something from the outside of an organism that causes it to respond. Heat, Weather, Fear of predators, etc. |
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| The action or reaction to a stimulus. |
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| The variety of life on Earth. |
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