Take out a piece of paper

1. Take out a piece of paper • With your table/partner discuss: • What is a system? (Write down a few sentences) • What are examples of systems? (Write down at least 4)

2. Ecosystems! WooHoo!

3. What IS an ecosystem? A. Ecosystems are made up of two factors 1. Biotic factors are the living things in an ecosystem

4. What IS an ecosystem? • 2. Abiotic factors are the non-living things in an ecosystem. Abiotic means that it has never been alive.

5. Ecosystem vs. Biome B. An ecosystem is a biological community and all of the abiotic factors that affect it C. A biome is a large group of ecosystems that share the same climate and have similar types of communities

6. Habitat & Niche Scavenger Producer Consumer Decomposer D. A habitat is an area where an organism lives E. A niche is the role or position that an organism has in its environment

7. Think of all the different living things in the world…A. Biodiversity is the variety of organisms living in a habitat

8. Food Chains/Webs • http://www.il.youtube.com/watch?v=LgYPeeABoUs I. Food Chains/Webs A. Most food chains/webs start with the sun B. Producers use energy from the sun and nutrients from soil to make their food 1. This process of changing solar energy to chemical energy is called photosynthesis 2. The products of photosynthesis are sugar and oxygen 3. Another name for a producers is autotroph

9. Respiration C. Other members of the food chain use oxygen in a process called respiration 1. Respiration is breathing, taking in oxygen and releasing carbon dioxide

10. 2. These organisms are called heterotrophs a. The types of heterotrophs are herbivores, carnivores, omnivores and detritivores

11. Food Chains Photosynthesis

12. Food Chains Chemosynthesis

13. Energy Pyramid D. At each link in a food chain, some energy is stored in the predator, but a lot of the energy is released as heat

14. Imagine a world with no producers…

15. Decomposers E. Decomposers consume dead plants and animals (detritus) and animal waste 1. They turn the detritus and animal waste back into nutritious soil

16. Imagine a world with no decomposers…

17. What are some natural ways ecosystems can change?

18. How have humans affected ecosystems?

19. Organization of Life A. Classification is how we organize all living things B. A group of organisms is called a taxon C. From most general to most specific, the taxonomic categories are: 1. Domain 5. Order 2. Kingdom 6. Family 3. Phylum 7. Genus 4. Class 8. Species

20. Don’t Keep Precious Creatures Organized For Grumpy Scientists

21. Symbiotic Relationships A. Symbiosis is the relationship that two or more organisms have with each other B. There are three types of symbiosis: 1) Mutualism 2) Parasitism 3) Commensalism

22. Mutualism C. Mutualism is when both organisms benefit from their relationship Examples: Lichen = Fungus + Algae Fungus provides the protection Algae provides the food Cleaner fish Cleaner birds

23. Parasitism D. When one organism benefits and the other is harmed Examples: Ticks, mites, ringworm, mistletoe

24. Commensalism E. When one organism benefits and the other organism is neither helped nor harmed Examples: Lichen on a tree Barnacles on a whale