level: Energy in Ecosystems
Questions and Answers List
level questions: Energy in Ecosystems
| Question | Answer |
|---|---|
| what do all food chains / webs start with? | plants/producers |
| where to plants/producers obtain their energy from? | the sun |
| what happens to the energy in transfers from one level to the next in a food chain? | 90% of the energy is lost as heat, movement or undigested materials only a very small quantity is used for growth and is therefore available at the next level of the food chain |
| what is a pyramid of numbers | shows the total number of individual organisms at each level in the food chain of an ecosystem |
| how else can you represent a pyramid of numbers with an irregular shape? | as a true pyramid of energy |
| what is a pyramid of energy | shows the total quantity of available energy stored in the biomass of organisms at each level in the food chain of an ecosystem per year |