Do Now…

1. Do Now… Which is the producer? Which organism is at trophic level 4? What type of consumer is the beetle? What type is the wild cat? What does the arrow represent? Wild cats Mouse Beetle Pine tree

2. Bird Hawk What has the food chain become now? What is at trophic level 1? What is at trophic level 3? What is at trophic level 4? What would happen if this pine tree forest was cut down? Wild cat Mouse Beetle Pine tree Rabbit

3. tree leaves buffalo zebra vulture lion bacteria in soil sunlight antelope grass hyena Make one food chain out of these organisms… Make a food web…. Where does the energy originally come from? What are the producers? What are the herbivores? What is the lion? Are there any scavengers? If so, which organism(s)? Are there any decomposers? If so, which organism(s)? What is the difference between a scavenger and a decomposer? What is the top carnivore’s trophic level?

4. Answers • Sunlight  grass  zebra  lion • On board…. • Sunlight • Grass, tree leaves • Zebra, antelope, buffalo • Carnivore • Vulture, hyena • Bacteria • A scavenger eats dead things, and is only a consumer in the food chain. A decomposer breaks dead things down into smaller molecules (e.g. carbon, nitrogen) so that they can be re-used by the producers. • T4

5. Words to help you with energy flow diagram (#5): T4 – Secondary carnivores Dead bodies T2 – Herbivores Heat T1 – Producers Decomposers T3 – Primary carnivores Food