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Glossary of Terms (as used in the lessons) E is for . . . |
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| ear notching | Cutting notches into an animal's ears for identification purposes. |
| earthworm |
Any of various worms that burrow into and help aerate and enrich the soil. |
| ecology | The relationships between organisms and their environments. |
| ecosystem | A system of relationships between organisms and their environment. |
| ecotone | A transitional area between two types of vegetation. |
| edible | Fit to be eaten. |
| efficient | Acting or producing effectively with a minimum of waste, expense, or unnecessary effort. |
| egg | The round or oval female reproductive body of various animals, consisting usually of an embryo surrounded by nutrient material and a protective covering. |
| embryo | An organism in its early stages of development, before it has reached a distinctively recognizable form. |
| emulsifier | A substance with the ability to suspend small globules of one liquid in a second liquid with which the first will not mix. |
| emu | A large, flightless Australian bird related to and resembling the ostrich and the cassowary. |
| encyclopedia | A comprehensive reference work containing articles on a wide range of subjects or on numerous aspects of a particular field, usually arranged alphabetically. |
| end product | The result of a completed series of processes or changes. |
| endosperm | The nutritive portion of a seed. |
| energy | A source of usable power, such as petroleum or coal. |
| enthusiast | A person who is intensely involved with a particular subject. |
| environment | The total of all external conditions which act upon an organism or community of organisms to influence development or existence. |
| Environmental Protection Agency | Federal agency involved in protection of the environment. |
| enzyme | Any of numerous proteins or conjugated proteins produced by living organisms and functioning as biochemical catalysts. |
| erode | To wear away by wind, water or other forms of abrasion. |
| Etruscans | People who lived in ancient Etruria, in what is now Tuscany and parts of Umbria in western Italy. |
| ewe | A female sheep. |
| excrete | To eliminate waste matter from the blood, tissues or organs. |
| exoskeleton | The external protective or supporting structure of many invertebrates, such as insects or crustaceans. |
| expand | Grow larger. |
| expenses | Money that is paid out; a cost. |
| experiment | The process of conducting a test. |
| export | To send or carry a commodity abroad for sale or trade. |
Printable (pdf) version of entire glossary
