| A | B |
|---|
| environment | all the surrounding things and conditions affecting a living organism |
| ecology | the study of how organisms interact with the loving and non lliving factors in their environment |
| ecologist | person who studies ecology |
| population | members of a single species living in a single area |
| community | populations of different species living together in same area |
| producers | make energy from sunlight and non-living materials |
| consumers | eat or decompose producers or other consumers |
| herbivores | eat only plants |
| carnivores | eat only animals |
| omnivores | eat both plants and animals |
| predators | carnivores that hunt live animals |
| prey | the animals that are hunted |
| food chains | energy is passed along the food chain |
| symbiosis | the living together in a close relationship of two dissimilar organisms |
| commensalism | one organism benefits and the other is neither helped nor harmed |
| parasitism | one organism benefits at the expense of the other |
| mutualism | each organism benefits from the other |
| habitat | place where organisms live |
| biomass | more energy is required on the bottom of the pyramid |
| food web | there are many intertwined food chains |
| abiotic | non living conditions that affect organisms |
| biosphere | the part of the earth and its atmosphere in which living thing exist |
| succession | when community slowly replaces another |
