| A | B |
|---|
| biosphere | the part of the Earth where living things can exist |
| resource | a thing that an organism uses to live |
| consumer | an organism that feeds on other organisms |
| food chain | the feeding order of organisms in an ecosystem |
| producer | an organism that makes its own food |
| carnivore | a consumer that eats only animals |
| herbivore | a consumer that eats only plants |
| omnivore | a consumer that eats both plants and animals |
| interact | to act upon or influence something |
| food web | all the food chains in an ecosystem that are linked to one another |
| pyramid of numbers | a diagram that compares the sizes of population at different levels of a food chain |
