| A | B |
|---|
| carrying capacity | how many organisms an ecosystem can support |
| population | group of individuals of the same species |
| community | groups of species in and area |
| tropical rain forest | biome that receives the most rain |
| hypothesis | possible answer to a problem |
| theory | a hypothesis that has been tested and supported many times |
| independent variable | the thing that is being tested |
| dependent variable | the thing that changes because of the independent variable |
| control | used for comparison |
| food web | energy flow between organisms |
| limiting factor | things that limit the number of individuals in a population |
| photosynthesis | the main process by which energy enters the biosphere |
| cell | basic unit of structure in organisms |
| grasslands | important for agriculture (grows crops such as oats and wheat) |
| tundra | cold biome with permafrost |
| wolf | 2nd order consumer |
| rabbit | 1st order consumer |
| oak tree | producer |
| mutualism | two organisms live together for mutual benefit |
| succession | orderly replacement of communities |
| heterotroph | gets food (energy) from other organisms |
| autotroph | makes its own food (does photosynthesis) |
| reproduction | necessary for the perpetuation of the species |
| parasite | one organism benefits and the other is harmed |
| scavenger | animal that feeds on dead organisms |
| decomposer | organism that breaks down organic matter such as animal waste |
| organism | a living thing |
| omnivore | eats both plants and animals |
| herbivore | eats plants |
| carnivore | eats meat |
| taiga | northern coniferous forests |
| ddt | pesticide that made egg shells soft |
