Term
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Definition
| A way of geting food by straining it out of the water. |
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Definition
| An animal that eats plants |
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Definition
| An animal that eats other animals. |
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Term
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Definition
| Form and release, or give off. |
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Term
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Definition
| A substance that speeds up chemical changes |
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Term
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Definition
| A digestive space with a single opening |
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Term
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Definition
| A tubelike digestive space with an opening at each end |
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Term
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Definition
| Part of the digestive tract of some animals where food is stored. |
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Term
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Definition
| The part of the digestive tract of some animals that grinds food. |
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Term
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Definition
| The opening through which material that is not digested leaves the digestive tract |
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Term
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Definition
| Take in oxygen and give off carbon dioxide |
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Term
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Definition
| The movement of materials from an area of high concentration to an area of low concentration |
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Term
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Definition
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Term
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Definition
| A system in which blood makes direct contact with cells. |
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Term
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Definition
| A segmented worm or a worm whose body is devided into sections. |
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Term
| Closed circulatory system |
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Definition
| A system in which blood stays inside vessels at all times. |
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Term
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Definition
| Get rid of wastes or substances that are not needed |
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Term
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Definition
| a cell that collects excess water in a flatworm |
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Term
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Definition
| An organ of excretion found in vertebrates |
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Term
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Definition
| A chemical signal that glands produce |
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Term
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Definition
| A chemical signal that a nerve cell releases |
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Term
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Definition
| a bunch of nerve cells that are loosely connected |
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Term
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Definition
| The brain and spinal cord |
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Term
| Peripheral nervous system |
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Definition
| The nerves that send messages between the central nervous system and other body parts. |
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