| A | B |
|---|
| Heterotrophs are | consumers |
| Autotrophs are | producers |
| A food web | describes the energy and nutrient links b/t organisms in the environment |
| All the Earth's ecosystems together make up the | biosphere |
| Autotrophs are the only food these organisms eat | primary consumers |
| The food relationship grain--> turkey--> human is called a | food chain |
| The energy pyramid tells us that | energy lost as heat is only 10% of the absorbed energy |
| When a population multiplies by a constant time interval is called | exponential growth |
