| A | B |
|---|
| Variables | Factors that can change in an experiment |
| Data | Facts, figures and other evidence gathered during an experiment |
| Controlled experiment | Experiment with only one variable that is changed |
| Producer | An organism that can make its own food |
| Consumer | Organism that gets energy by feeding on other organisms |
| Herbivore | Consumers that eat only plants |
| Carnivore | Consumers that eat only animals |
| Omnivore | Consumer that eats both plants and animals |
| Scavenger | Carnivore that eats dead organisms |
| Decomposer | Organism that breaks down wastes and dead organisms into raw materials |
| Food chain | Series of events in which one organism eats another to obtain energy |
| Food web | Many overlapping food chains |
| Energy pyramid | Graphic that shows the amount of energy that moves from one energy level to another |
| Water cycle | Process by which water moves between Earth and atomosphere |
| Evaporation | Liquid water changes into the gas state |
| Condensation | A gas changes into a liquid |
| Precipitation | Rain, Snow, Hail, Sleet |
| Nitrogen fixation | Process of chaning free nitrogen gas into useable nitrogen compounds |
| Nodules | Bumps on plant roots where bacteria live |
