Bio20 Ecosystems

1. An organism that can make its own food
2. An organism that lives in or one another organism (called the host)
5. A substance that spoils, dirties, or damages some aspect of the environment
8. An organism that eats only plants
10. The habitat that supplies everything needed for a species or an organism to survive or the role that an organism plays in its environment
11. A living organism on which a parasite lives
13. A hot, humid biome near the equator with much rainfall and a wide variety of life. The soil in this biome is not very fertile because of all the many plants taking the nutrients from the soil
15. The process by which green plant cells make food from sunlight, water, and carbon dioxide
17. A cool forest biome in the Northern Hemisphere that has mostly conifer trees (needle-like leaves )
18. Cycle The continuous circulation of water between the Earth’s surface and the atmosphere
19. A flat or slightly rolling plain with few trees and permanently frozen ground
20. Many food chains put together to show how energy flows through the ecosystem

1. All the members of one species that live in one area
3. Something in an environment that keeps the population of an organism from increasing as much as it could
4. The place and surroundings where an organism normally lives
6. Occurs in animals and plants - energy is released from sugar (glucose) by a series of chemical reactions. The sugar is broken down into carbon dioxide and water in a process which uses oxygen
7. A biome whose main plants are grasses
9. An animal that is hunted, killed and eaten by a predator
12. The order in which animals feed on plants and other animals (shows how energy flows from producer-consumer-decomposer)
13. The breaking down of products into raw materials that can be used to make new products
14. An animal that hunts, kills, and eats other animals
15. Occurs when harmful pollutants are put into the environment and can cause harm
16. A consumer that eats both plants and meats