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Energy flow
Question | Answer |
---|---|
What is a producer? | An organism that can make its own food. |
What is a consumer? | An organisms that obtains energy by feeding on other organisms. |
What is a herbivore? | A consumer that eats only plants. |
What is a carnivore? | A consumers that eats only animals. |
What is an omnivore? | A consumer that eats both plants and animals. |
What is a scavenger? | A consumer that feeds on the bodies of dead organisms. |
What is a decomposer? | An organism that breaks down waste and dead organisms and returns the raw materials to the environment. |
What is a food chain? | A series of event in which one organism eats another and obtains energy. |
What is a food web? | Overlapping food chains in an ecosystem. |
What is an energy pyramid? | It shows the amount of energy that moves form one feeding level to another in a food web. |
What is the difference between a flow and a cycle? | When energy moves in a flow, it does not return to its source, as it does in a cycle. |
Describe what would happen if there were only producers and consumers and no decomposers. | All organisms produce waste and eventually die. This waste and dead organisms must be removed or they would pile up and overwhelm living things. |
Why does the number of organisms in an energy pyramid decrease as they move up the pyramid? | As the levels get higher, there is less available energy. |
What percentage of energy transfers to next level in an energy pyramid? | 10% |
What happens to the rest of the energy after 10% is transferred to the next level? | The other 90% is used for the organism's life processes. |
Where does most of the energy in an ecosystem originate from? | Organisms get energy from food that they make using light or chemical energy or be eating other organisms. |