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Energy in Ecosystems What are some forms of ENERGY ?. Energy in Ecosystems. All organisms require energy to : Eat and digest food Hunt for food Move Think Live!. The Sun. provides light and heat energy and is the ultimate source of energy for life. (in most ecosystems) .
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Energy in Ecosystems • All organisms require energy to: • Eat and digest food • Hunt for food • Move • Think • Live!
The Sun • provides light and heat energy and is the ultimate source of energy for life. • (in most ecosystems). • not all sunlight makes it to the earth’s surface! – WHY?
Producers • take energy from the sun and make it into chemical energy for living things (SUGAR). • not all the energy is stored in the plant – most is used by the plant to survive, grow and live!
Try this… • See p23 in text try activity A4
Food Chain shows how the energy that is stored in food is transferred from one living thing to another.
Food Chain : plant → insect → sparrow → hawk (the Pepsi demo)
Questions for Pepsi Demo • Which organism was the most satisfied by the amount of energy they received? Which organism was the least satisfied? • What happened to the “Pepsi” from the sun that the plant didn’t pass along? • How much energy was used by the insect? • What can’t a food chain have 20 links?
Make your own food chain in your notes - Must use arrows to show energy flow
Producers and Consumers ________________ - any living thing that gets the energy it needs by making its own food. Eg. _________ ________________ - any living thing that gets the energy it needs by eating other things; either producers or other consumers. Eg___________
Types of Consumers Herbivores – consumers that eat only plant materials. Eg: __________________ Carnivores – consumers that only eat other consumers. Eg: _________________ Omnivores – consumers that eat both plant and other consumers. Eg: ___________
Types of Consumers Decomposer - A consumer that eats dead and decaying matter. These organisms break the matter down further so it can continue in the nutrient cycles. Eg: _____ Scavenger - A consumer that eats the remains of food left behind by another organism. Eg Seagulls eating leftover fast eddies fries in the garbage
Food Web www.eoearth.org
Food Web for a __________ ecosystem www.champaignschools.org
Food web for a __________ ecosystem A food web for a ____________ ecosystem Reference: Molles, Manuel C. Ecology: Concepts and Applications. Boston: WCB/McGraw-Hill, 1999.
A food web for a ____________ ecosystem Reference: Molles, Manuel C. Ecology: Concepts and Applications. Boston: WCB/McGraw-Hill, 1999.
Practice Questions Food chains/webs and cycling P35 #1-6, 9-15 http://www.mnn.com/earth-matters/animals/photos/12-animals-with-the-longest-gestation-period/heres-to-mothers