Science 10 2.1: Energy Flow Systems

2. Hawks and sea otters that feed on secondary consumers to obtain energy are which type of consumer?
6. The primary producers that support marine life in aquatic food chains.
8. Food pyramids are also referred to as this.
10. Primary consumers that eat plants, like grasshoppers, are __________.
11. These obtain their energy by eating primary producers.
12. A model that shows the loss of energy from one trophic level to another.
14. Plants are called this because they form carbohydrates during photosynthesis.
15. What are the steps in the food chain called?
17. The breaking down of organic wastes and dead organisms.
18. The total mass of living plants, animals, and fungi.
19. An insect such as a bee that feeds on a plant such as a sunflower is an example of this.
20. Hawk, weasel, rabbit, grass; which of these organisms is at the top of the trophic level?

1. These consumers obtain their energy and nutrients by eating the bodies of small dead animals, dead plant matter, and animal wastes.
3. A secondary consumer that eats primarily consumers.
4. The lower the trophic level, the ______ the number of organisms that can be supported by the ecosystem.
5. The action of living organisms such as bacteria to break down dead organic matter.
7. These change wastes and dead organisms into usable nutrients.
9. Plants and algae are examples of this.
10. Between 80% and 90% of the food energy taken in by you and other organisms are used for chemical reactions in the body and is lost to the ecosystem as what?
13. Food pyramids illustrate that most of the Sun's energy that is trapped by ______ flows out of an ecosystem.
16. A model that shows the flow of energy from plant to animal and from animal to animal.