1. What is the difference between how plants and humans get food? (Use a compound sentence with AND, BUT, or OR)

2. Autotrophs vs. Heterotrophs Autotrophs – make their own food so they are called PRODUCERS Heterotrophs – get their food from another source so they are called CONSUMERS

3. Two Main forms of Energy for Autotrophs Sunlight – The main source of energy for life on earth – Photosynthesis Chemical – Some organisms such as bacteria, rely on the energy stored in inorganic compounds – Chemosynthesis

4. Types of Consumers Herbivores- only eat plantsCarnivores - only eat animals Omnivores- eat plants AND animals Decomposers Feeds on plant and animal remains

5. 5 Organisms that can make glucose during photosynthesis are called Organisms that can make glucose during photosynthesis are called PRODUCERS. copyright cmassengale

6. 6 Organisms that cannot make their own energy are called CONSUMERS.

7. Consumers that eat producers to get energy: Are primary consumers Are herbivores (plant-eaters)

8. 8 Most of the energy the primary consumer gets from the producer is used by the consumer.

9. 9 Some of that energy moves into the atmosphere as heat. copyright cmassengale

10. 10 Some energy in the primary consumer is STORED This energy is available for another consumer (predator). copyright cmassengale

11. A Consumer that Eats Another Consumer for Energy: Secondary Consumers Secondary Consumers

12. 12 Most of the energy the secondary consumer gets from the primary consumer is used by the secondary consumer. copyright cmassengale

13. 13 -Someof the energy is lost as heat -some energy is stored and can be passed on to another consumer. -Some of the energy is lost as heat -some energy is stored and can be passed on to another consumer. copyright cmassengale

14. A consumer that eats a consumer that already ate a consumer: Tertiary Consumer Tertiary Consumer

15. Consumers that eat producers & other consumers Are called omnivores Are called omnivores Omnivores eat plants and animals Omnivores eat plants and animals

16. Consumers that eat other dead consumers are called scavengers

17. Feeding Relationships Food Chain – steps of organisms transferring energy by eating & being eaten Food Web – network of all the food chains in an ecosystem

19. Food Web

20. How does that energy flow through an ecosystem? Energy flows through an ecosystem in ONE direction – sun or chemicals – autotrophs – heterotrophs

21. 21 Energy Pyramids Amount of available energy decreases for higher consumers Amount of available energy decreases for higher consumers Amount of available energy decreases down the food chain (or as you go up in the pyramid) Amount of available energy decreases down the food chain (or as you go up in the pyramid)

22. 22 Energy Pyramids It takes a large number of producers to support a small number of primary consumers It takes a large number of producers to support a small number of primary consumers It takes a large number of primary consumers to support a small number of secondary consumers It takes a large number of primary consumers to support a small number of secondary consumers

23. Ecological Pyramids Energy Pyramid Biomass Pyramid Pyramid of Numbers  Trophic Level – each step in a food chain or food web

24. Pyramid of Energy – amount of energy available at each trophic level Most of the energy is used by the organisms for life processes Some of the energy is lost as heat  Only 10% of the energy from each trophic level is passed on to the next level

26. Why are nutrients important ? 95% of your body is made of… 1)OXYGEN 2)CARBON 3)HYDROGEN 4)NITROGEN Every living organism needs nutrients to build tissues and carry out essential life functions.

27. Availibility of nutrients If a nutrient is in short supply, it will limit an organism’s growth. It is called a limiting nutrient When a limiting nutrient is dumped into a lake or pond, an algal bloom occurs and can disrupt the ecosystem

28. Exit Ticket (Assessment Grade) Explain why only 10% of the energy from an organism gets transferred the the next level in an energy pyramid Use complete sentences!!!