1. Chapter 35 Interaction Among Living Things

2. Our Environment  Consists of all the living and nonliving things with which an organism may interact.  Web of Connections / Systems

3. Either One or the Other  Biotic Factors  All of the living Things in the environment  Abiotic Factors  All of the nonliving components

4. Environments include:  Individuals  Populations  Communities  Habitat  Niche

5. Example Individual: a bunny ( PJ )

6. Con’t. Population of bunnies (PJ’s family)

7. Con’t. Many populations of bunnies

8. A Community: Many Populations of Different Organisms

9. Con’t. A bunny’s habitat

10. Con’t. Their niche ( role in the environment )

11. Ecology vs. Ecosystem  Ecology:  The study of the relationships and interactions of living things with each other & their environment  Ecosystem:  Separate “units” of the living & nonliving things

12. Ecosystems ForestPond

13. Competition Living organisms compete for: Living organisms compete for: Food Food Space Space Mates Mates

14. Relationships PredatorPrey

15. Energy flow within in Ecosystem 1. Producers

16. Energy Flow 2.1 Consumers –Carnivore ( meat eater )

17. Energy Flow 2.2 Consumers –Herbivore ( plant eater )

18. Energy Flow 2.3 Consumers –Omnivore : eat both plant & meat

19. Energy Flow 3 Decomposers ( return the nutrients )

20. Energy Cycles Food Chains & Food Webs

21. Energy in the Ecosystem The sun is the primary source of energy

22. Symbiosis ( relationships ) Commensalism : One organism benefits & the other is not affected by the relationship

23. Symbiosis Mutualism: Both organisms benefit from the relationship

24. Symbiosis Parasitism: One organism benefits and the other will be harmed

25. Factors that influence Ecosystems Climate ( temp / moisture ) Climate ( temp / moisture ) Geography Geography New species New species Humans Humans Natural forces Natural forces Fire / erosion / floodsFire / erosion / floods

26. So in the end… Keep our environment clean & healthy Keep our environment clean & healthy PJ thanks you PJ thanks you