| A | B |
|---|
| producer | makes own food |
| Sun | abioitic source of energy for most life on Earth |
| decomposer | eats already dead things and returns nutrients to the ground |
| scavenger | eats already dead things but does not return nutrients immediately to soil |
| herbivore | eats plants |
| carnivores | eats meat |
| top carnivore | the organism at the top of the food chain |
| omnivore | eats plants and animals |
| primary consumer | first consumer in a food chain |
| secondary consumer | second consumer in a food chain |
| pesticide | kills life forms that are not wanted |
| photosynthesis | plants do this and make oxygen and store food |
| cellular respiration | most life forms do this to get energy |
| biodiversity | the variety of life forms in a given ecosystem |
| limiting factor | something that restricts how much life can live in an ecosystem |
