| A | B |
|---|
| population | a group of individuals of the same species living in an area |
| carrying capacity | the number of organisms of a given population that can survive in a given area |
| limiting factor | things like the amount of food available that limits the number of organisms that can survive in a particular niche |
| niche | where an organism lives, what it eats, etc. |
| organism | a single living thing |
| producer | an autotroph; organism that makes its own food |
| heterotroph | an organism that gets energy from eating other organisms |
| primary consumer | a heterotroph that eats producers |
| secondary consumer | a heterotroph that eats primary consumers |
| top predator | a heterotroph that eats another predator; on top of the food chain |
| omnivore | an organism that eats both autotrophs and other heterotrophs |
| carnivore | an organism that eats only other heterotrophs; "meat eater" |
| herbivore | a primary consumer |
| biotic factors | living factors in an ecosystem |
| abiotic factors | nonliving factors in an ecosystem |
| ecosystem | made up of biotic and abiotic factors put together |
