| A | B |
|---|
| Consumer | Those organisms that obtain energy by feeding on other organisms and their remains. |
| Decomposer | An organism, often microscopic in size, that obtains nutrients by consuming dead organic matter, thereby making nutrients accessible to other organisms |
| Delineate | To trace the outline; to draw; to sketch; to depict or picture. |
| Desalinization | To remove salts and other chemicals from sea or saline water. |
| Dichotomous | Divided or dividing into two parts or classifications. |
| Ecosystem | A community of living organisms and their interrelated physical and chemical environment. |
| Electronic communication | System for the transmission of information using electronic technology |
| Embryology | The branch of biology dealing with the development of living things from fertilized egg to its developed state. |
| Endangered species | A species that is in danger of extinction throughout all or a significant portion of its range. |
| Engineering | The application of scientific, physical, mechanical and mathematical principles to design processes, products and structures that improve the quality of life. |
| Environment | The total of the surroundings (air, water, soil, vegetation, people, wildlife) influencing each living being’s existence, including physical, biological and all other factors |
| Enzyme | A protein that increases the rate of a chemical reaction without being changed by the reaction; an organic catalyst. |
| Equilibrium | The ability of an ecosystem to maintain stability among its biological resources (e.g., forest, fisheries, crops) so that there is a steady optimum yield. |
| Ergonomical | Of or relating to the design of equipment or devices to fit the human body’s control, position, movement and environment. |
