Term
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Definition
| Keeping track of something for a specific purpose. |
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Term
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Definition
| Animals without backbones. |
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Term
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Definition
| How poisonous a substance is. |
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Term
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Definition
| Lethal dose 50; amount of a substance that causes 50% of a group of test animals to die that are given a specified dose of the substance all at once. |
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Term
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Definition
| Metals that have a density of 5 or higher. |
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Term
| Volatile Organic Compounds (VOC) |
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Definition
| Organic materials that evaporate easily. |
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Definition
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Term
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Definition
| Gases in Earth's atmosphere that trap heat that forms when radiant energy from the Sun reaches Earth's surface. |
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Term
| Chlorofluorocarbons (CFCs) |
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Definition
| Chemicals used by humans that are thinning the ozone layer. |
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Term
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Definition
| Scattering of a substance away from its source. |
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Term
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Definition
| Top of the groundwater zone. |
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Term
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Definition
| Tiny spaces between soil grains in a rock. |
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Term
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Definition
| Description of a substance that contains pores. |
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Term
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Definition
| Liquid that dissolves and carries substances as it passes through soil. |
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Term
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Definition
| Mixing of a substance with air or water. |
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Term
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Definition
| Breakdown of materials by organisms such as organisms such as earthworms, bacteria or fungi. |
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Term
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Definition
| Refers to the processes or environments that require or contain oxygen. |
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Term
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Definition
| Refers to the processes or environments that do not require or contain oxygen. |
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Term
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Definition
| Clean up of the environment using plants. |
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Term
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Definition
| Breakdown of compounds by sunlight. |
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Term
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Definition
| Increase in concentration of a chemical or element as it moves up the food chain. |
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Term
| Material Safety Data Sheet (MSDS) |
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Definition
| Detailed information sheet about a potentially hazardous product, provided by the manufacturer. |
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