| A | B |
|---|
| Abiotic | Non-living parts of an ecosystem |
| Biotic | Living parts of an ecosystem |
| Food chain | Pathway which energy follows from producer to consumer |
| Food web | Interconnected food chains |
| Biogeochemical cycles | Water, carbon & nitrogen cycles |
| Commensalism | One organism benefits in a relationship |
| Parasitism | One organism benefits the other is harmed |
| Mutual ism | Both organisms benefit from relationship |
| Producer | Organism that undergoes photosynthesis |
| Consumer | Organism relies on producers as a food source |
| Predator | One that captures, kills, and consumes another |
| Prey | One that us captured, killed and consumed by another |
| Food pyramid | Levels where food is produced in an ecosystem |
| Energy pyramid | levels where energy is produced in an ecosystem |
| Biotic potential | Ability of an ecosystem to maintain life |
| Enviromental resistance | Ability of an ecosystem to resist change |
| Population factors | Factors that limit population growth |
| Carrying capacity | Number of individuals of a species that an ecosystem can support |
| Succession | Sequential replacement of populations in an ecosystem |
| Biome | Geographic area with characteristic plants, animals,& climate |
| Ecosystem | All the biotic and abiotic parts of an environment |
| Ecology | Study of organisms and their environment |
| Biomass | The dry weight of organic matter in an ecosystem |
| Biosphere | Area on and around earth where life exists |
| Birth rate | Number of births occuring in a period of time |
| Death or Mortality rate | Number of deaths occuring in a period of time |
| Community | All the populations in an area |
| Population | All the members of a species in an area |
| Species | Group of organisms capable of producing fertile offspring in the natural environment |
| Scavenger, Saprophyte, or Decomposer | Organisms which feed off dead matter |
| Habitat | Physical area where an organism lives |
| Niche | The way of life of a species |
| Climate | The amount of rain fall and temperature in an area |
| Immigration | Movement of individuals into a population |
| Emigration | Movement of individuals out of a population |
| Growth rate | Amount by which the size of a population changes in a given time |
| Herbivore | Animals that eat only plants |
| Carnivore | Animals that eat only meat |
| Omnivore | Animals that eat both plants and animals |
| Parasite | feeds on another individual known as a host |
