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| something you can compare your tests to from a faraway place |
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| animals/plants that is sensitive to changes in the environment. They show scientists if the environment is healthy. |
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| A substance with a pH greater than 7. |
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| disk that we used to see if the water was clear or not |
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| chemical used to kill germs: a gaseous poisonous corrosive greenish yellow element of the halogen group that is highly reactive and is a product of the electrolysis of sodium chloride. Use: water purification, disinfectant. |
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a sequence of animals that get energy from each other, each one eating the one before it |
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| tool that shows you the visibility of the water. |
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| A small type of insect that lives in the water, they are bioindicators |
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| When acid rain gets into water, and the surrounding rocks are lime, the acidic water/rain is buffered/neutralized. If the rock is granite, then the water does not become neutralized. |
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| A substance that has a pH less than 7 |
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positively charged hydrogen ions which causes liquids to be acidic. |
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| negatively charged hydrogen ions that cause it to be alkaline/non acidic |
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Any place that includes living things: plants, animals, fungi, bacteria, or protists AND non-living things: minerals, air, water, land
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| many feeding relationships that are all interconnected in an ecosystem. |
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Each step of energy through the food chain or food web |
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| a photosynthetic organism. The only organism on earth that can take energy directly from the sun. |
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| organisms that eat dead things. Bacteria, vultures, fungi, termites, blowflies, maggots. |
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A test that shows what is dying off |
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a test that shows what’s killing the dying organisms |
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| it rains and sediment is carried by water to a stream or river |
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