Download Ch. 4 Ecosystems study guide. Change the underlined word in each

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Transcript
Ch. 4 Ecosystems study guide.
Change the underlined word in each sentence to make it true.
1.
All green plants are consumers.
2. When one species benefits and the other is harmed, it is mutualism.
3. Mutualism is any close relationship between species.
4. Animals that consume dead organisms, like worms, are herbivores.
5. Producers eat other organisms for food.
6. The carrying capacity of a population is anything that restricts the number of individuals.
7. A community consists of all the living organisms in one species in an area.
8. The biosphere consists of all the living organisms and the nonliving features of an area.
9. The ecosystem includes land, water, and the atmosphere.
10. The habitat of an area is all the different living populations in that area.
11. A niche is where an organism lives.
12. Plant eaters like rabbits are omnivores.
13. Humans that eat meat and plants are decomposers.
14. A symbiotic relationship when one species benefits and the other is harmed is commensalism.
15. When a bird builds a nest in a tree, it is considered parasitism.
16. The presence of predators usually decreases the number of different populations in the area.
17. A deer tic that lives off of the deer’s blood is an example of mutualism.
18. The limiting factor of a population is the largest number of individuals than an area can handle.
19. A botanist studies the interactions of living organisms and their environment.
20. The reintroduction of wolves to Yellowstone has decreased the number of populations in the
area.
Be prepared to discuss the reintroduction of wolves to Yellowstone and the effects it has had on the
ecosystem of the area.
Why must a producer start every food chain on earth.