| A | B |
|---|
| producers | plants and some animals who make their own food |
| plants | the main producers on land |
| algae, protists and plankton | the main producers in lakes and oceans |
| sunlight | the main source of energy in most ecosystems |
| ecosystem | a community of living things and all the nonliving things with which the community interacts. |
| heat | most of the energy that enters the environment as sunlight is eventually lost as... |
| photosynthesis | the process green plants use to make food from sunlight |
| chemical energy | the energy from sunlight that is converted and stored in the plant's cells as a simple sugar |
| food | provides fuel and building materials for all organisms |
| energy | all living organisms must release this from food to carry out life processes |
| sun | most food systems start here |
| consumers | get energy by eating other organisms in the food chain |
| eats only plants | primary consumer / herbivore |
| secondary consumer | consumers that eat primary consumers |
| tertiary consumer | consumers that eat secondary consumers |
| decomposers | feed on the wastes or bodies of dead organisms |
| energy pyramid | shows how evergy is lost through a food chain |
| prey | animals that are killed and eaten |
| food webs | food chains that are linked together in an ecosystem and form a complex network |
| predator | an animal that hunts, kills and eats other animals |
