| A | B |
|---|
| Ecology | study of how organisms interact with each other |
| abiotic factors | non-living parts of an environment |
| biotic factors | living or once-living parts of an environment |
| individual | a single organisms of a species |
| population | all of the organisms of one species that live in the same area |
| community | populations that interact in some way |
| ecosystem | all of the communities in an area and the abiotic factors that affect them |
| biome | a large region with organisms adapted to the soil and climate |
| biosphere | all of the ecosystems on Earth |
| Tundra | located in the arctic circle and the coldest of all biomes |
| Taiga | Long cold winters and short mild wet summers. |
| Grassland | Mostly grass with rich dirt |
| Temperate forest | A wet environment with 4 distinct seasons |
| Tropical Rain Forest | located close to the equator and lush and warm |
| Chaparral | very hot and dry |
| Savanna | warm with mostly grass and a few trees |
| desert | gets very little rain but can be hot or cold |
| Mountain | Windy and cold with strong sunlight |
| population size | total number of individuals in a population |
| population density | individuals of species in a specific area |
| population spacing | how a population is arranged in an area |
| limiting factors | any abiotic or biotic factors that limit the size of a population |
| carrying capacity | how large a population an environment can support |
| symbiosis | close interaction between two or more species |
| commensalism | symbiosis that benefits both species |
| parasitism | symbiosis that benefits one species and harms the other species |
| predation | one organism feeding off another organism |
| habitat | where an organism lives |
| niche | the role of an organism |
| Food chain | model showing with organism eat which |
| producers | organisms that take energy from the sun |
| consumers | organisms that get energy by feeding on producers or other consumers |
| food web | a series of overlapping food chains |
| energy pyramid | compares the energy available at each level of a food chain |
| carbon | building block of all living things on Earth |
| Nitrogen | makes up most of air |
