1. Ecosystems: Symbiosis
Ms. Clodfelter
8th grade science

2. Review Question One
Habitat becomes a major factor in the extinction of a species when
Genetic diversity is not achieved
Competitive species are introduced
Changes in behavior start to develop
Smaller populations fail to breed

3. Answer
b. Competitive species are introduced

4. Review Question Two
Which is an abiotic factor that would affect the growth of a population within an ecosystem?
The availability of water
The availability of producers
The type of herbivores present
The number of carnivores present

5. Answer
a. The availability of water

6. Review Question Three
In a beehive, different bees have different jobs within the hive, but all must work together in order for the hive to survive. Which is most likely being demonstrated?
Competition
Cooperation
Mutualism
parasitism

7. Answer
b. cooperation

8. What is Symbiosis?
A relationship among organisms where one or more species may benefit There are three types: parasitism, mutualism, commensalism

9. Keep in Mind…. Sometimes animals don’t get along. This is competition.
Something lives/eats (predator) and something dies (prey)

10. Parasitism
One organism benefits and the other is harmed

11. Mutualism
Both organisms benefit

12. Commensalism
A relationship where one organism benefits and the other is neither helped nor harmed

13. Let’s Practice

14. With your remaining time
Complete your Webquest (due by the end of class)
Study Vocab (quiz Friday)
Complete a reflection (due next Friday, 11/13)