| A | B |
|---|
| Biomass | dry weight of living organism |
| Conservation | planned management of a natural resource |
| Ecosphere | parts of the universe habitable by living organisms |
| Emigrate | leave one's place of residence |
| Environment | complex of physical, chemical and biotic factors that act upon an organism |
| Eurythermal | able to tolerate a wide range of temperature |
| Immigrate | migrate to a new location |
| Interact | relate to or act upon another |
| Manipulate | manage or utilize skillfully |
| Natality | birth rate |
| Niche | habitat supplying factors necessary for existence |
| Nutrient | furnishing nourishment |
| Photosynthesis | formation of carbohydrates from carbon dioxides in the chlorophyll containing tissues of plants exposed to light |
| Population | organisms occupying a particular locality |
| Predation | mode of life which food is obtained by the killing and consuming of animals |
| Stenothermal | capable of surviving over only a narrow range of temperature |
| Succession | change between types of ecosystems involving changes in plant and animal species composition |
| Trophic | relating to nutrition |
| Primary | first in order of time or development |
| Secondary | second rank, importance or value |
| Tertiary | third in order of importance |
| Quaternary | fourth in order |
