2. 4.2 Ecosystems and Communities By: Deborah Lamoreaux

3. The ability of an organism to survive and reproduce under circumstances that differ from there optimal conditions. 4.2 Tolerance:

4. 4.2 Why does and organism experience stress? When the temperature extends further than the organisms optical range the organisms will become stressed.

5. 4.2 Habitat: A general place were an organism lives.

7. 4.2 Niche: Not only what the organism does, but also how it interacts with the biotic and abiotic factors.

8. By: Austin Thomas

9. RESOURCE A RESOURCE IS THE NECESSITY OF LIFE

10. PHYSICAL ASPECTS OF A NICHE INVOLVE ABIOTIC FACTORS IT REQUIRES FOR SURVIVAL EX: TEMPERATURE

11. BIOLOGICAL ASPECTS OF A NICHE AN ORGANISMS NICHE INVOLVE THE BIOTIC FACTORS IT REQUIRES FOR SURVIVAL EX: WHEN AND HOW IT REPRODUCES

12. By: Abigail Saxton

13. o Competition o When organisms attempt to use the same limited ecological resources in the same place at the same time. o Forest o Plant roots compete for water and nutrients in the soil. o Animals (beetles) o Compete for resources such as o Food o Mates o A place to live o Raise their young

14. o Intraspecific o This occurs between members of the same species. o Interspecific o Different Species

15. o Competition Exclusion Principle o States that no two species can occupy exactly the same niche in the exact same habitat at the exact same time. o If two species were to attempt to occupy the same niche, one species will be better at competing for limited resources. o *Which would eventually exclude the species* *Niche: The status of an organism within the environment and community.

16. o http://www.google.com/search?site=imghp&tbm=isch&source= hp&biw=1280&bih=884&q=niche&oq=niche&gs_l=img.3..0l1 0.8942.9796.0.11266.5.5.0.0.0.0.84.373.5.5.0....0...1ac.1.32.i mg..0.5.370.pnRr78QO5Qw&surl=1&safe=active#imgdii=_ http://www.google.com/search?site=imghp&tbm=isch&source= hp&biw=1280&bih=884&q=niche&oq=niche&gs_l=img.3..0l1 0.8942.9796.0.11266.5.5.0.0.0.0.84.373.5.5.0....0...1ac.1.32.i mg..0.5.370.pnRr78QO5Qw&surl=1&safe=active#imgdii=_ o Biology Text Book

18. o The Warbler example states that different species can divide resources instead of competing for them.

19. o _________ is the interaction were an animal eats a plant o Herbivory

20. o _________________ are a species that affects every part of that ecosystem that it inhabits o Keystone Species

21. Jebb Klock

22. Symbiosis- Living together of organisms 3 classes: Mutualisms; Parasitism; Commensalism 4.2 Continued

23. Mutualism- Relationship between two species that the both benefit Ex: Clownfish and the sea anemone 4.2

24. Parasitism - One organism lives on/in another organism and harms that organisms Ex: Tapeworms, Fleas, Ticks & Lice 4.2

25. NICHES AND COMMUNITY INTERACTIONS 4.2 Ross Lamoreaux

26. Examples Of A Parasitism…  Viruses  bacteria  fleas  and fungi are all classified as a parasitism.

27. What Is A Commensalism?  A Commensalism is a relationship in which one organism benefits and the other is neither helped or harmed.

28. Examples Of A Commensalism…  Barnacles  Remora sharks  And a crab that makes its home in an oysters shell.