| A | B |
|---|
| Producer | An organism that is able to produce its own food usually through photosynthesis. |
| Consumer | An organism which must eat other organisms for energy. |
| Decomposer | An organism that consumes parts of dead organisms and converts all the biomass into simple chemicals. |
| Mass | The amount of matter in something. |
| Biomass | The mass of matter produced by organisms in an ecosystem. |
| Photosynthesis | The process by which producers make energy-rich molecules (food) from water and carbon dioxide in the presence of light. |
| Cellular respiration | The process by which organisms convert sugar into usable energy using oxygen as a reactant. |
| Carbohydrate | Food in the form of sugar or starch. |
| Energy | The ability to do work. |
| Thermal energy | Radiant energy that heats. |
| Heterotroph | An organism that cannot make its own food; must eat other organisms for energy. |
| Autotroph | An organism that makes its own food; a producer. |
| Chloroplast | An organelle found in plant cells in which photosynthesis takes place. |
| Chlorophyll | A green pigment in chloroplasts that captures light energy to make sugars during photosynthesis. |
| Mitochondria | The organelle where cellular respiration occurs. |
| Transpiration | The movement of water up through the roots and out of the leaves of a plant. |
| Evaporation | The process by which water changes from a liquid to a gas or vapor due to increased particle motion (heat). |
| Condensation | The process by which water changes from a vapor to a liquid due to decreased particle motion (loss of heat). |
| Matter | Anything that has mass and takes up space. |
