| A | B |
|---|
| FOOD WEB | INTERCONNECTIONS IN A ENVIRONMENT |
| FOOD CHAIN | CONNECTIONS IN A FOOD WEB |
| POPULATION | NUMBER OF ORGANISMS |
| ACID RAIN | POLLUTED RAIN |
| POLLUTION | WASTE MATERIALS |
| PRODUCER | PLANTS AND VEGETATION |
| CARNIVORE | EATS OTHER ANIMALS |
| HERBIVORE | EATS PLANTS |
| CONSUMER | DOES NOT PRODUCE FOOD |
| DECOMPOSER | CONVERTS DEAD ORGANISMS INTO NUTRIENTS |
| ABIOTIC | NON-LIVING factors |
| BIOTIC | LIVING factors |
| BIODIVERSITY | RANGE OF LIVING ORGANISMS |
| BIOME | LARGE REGION WITH SPECIFIC CONDITIONS |
| ECOLOGY | STUDY OF RELATIONSHIP BETWEEN LIVING THINGS AND THEIR ENVIRONMENT |
| ECOSYSTEM | An ecological community of various plants, animals, and other organisms, interacting with each other and with the nonliving things |
| Global warming | The term given to the possibility that Earth's atmosphere is gradually warming because of the greenhouse effect of carbon dioxide and other gases |
| Greenhouse effect | A natural effect that traps heat in the atmosphere (troposphere) near the earth's surface |
| Habitat | Place or type of place where an organism, population, or community lives. |
| Niche | role of a living organism in an ecosystem |
| Introduced species | organism not native to a country |
| Biological control | organism used to control another organism in same ecosystem |
| Sysmbiosis | organisms living together |
| Mutualism | symbiotic relationship where both benefit |
| Parasite | symbiotic relationship where can harm the other |
| Food pyramid | Diagram representing the biomass (total dry weight of living organisms) that can be supported at each trophic level in a food web. The bottom of the pyramid is comprised of primary producers , while the peak of the pyramid is topped by one (or at most a small handful) apex predator |
| Adaptation | how living things change what they do or what they are to survive in a particular environment. In this the organism is not a passive recipient of external circumstances; the relationship is interactive |
| Respiration | energy production in living things |
| Photosynthesis | food production in green plants |
| Biodegradable | broken down by bacteria as opposed to something that remains in the environment (plastic, certain inustrial wastes). |
| Biomass | the total quantity of living matter in a given area or ecosystem. |
| Rainforest | an evergreen forest growing in a wt, humid climate. Rainforest coverage prevents desertification and drought and hosts more than half the world's animal species. |
