1. Bell Work 1.With out using your notes…write out the 5 levels of environmental organization in order starting from the smallest. 2.Create a food chain using the following: duck, minnow, algae, dog, sun

2. SPI 0607.2.1- Classify organisms as producers, consumers, scavengers, or decomposers according to their role in food chain or food web SPI 0607.2.2- Interpret how materials and energy are transferred through an ecosystem SPI 0607.2.3- Identify the biotic and abiotic elements of the major biomes SPI 0607.2.4- Identify the environmental conditions and interdependencies among organisms found in the major biomes

3. Symbiotic Relationships (pg. 62) Symbiosis- is a close, long-term association between two or more species. Divided into 3 groups. 1.Mutualism 2.Commensalism 3.Parasitism Can you see the Symbiotic Relationship?

4. Mutualism Mutualism is a symbiotic relationship where both organisms benefit. Examples: Human intestine and bacteria Algae and coral

5. Commensalism Commensalism is the symbiotic relationship in which one organism benefits and the other is unaffected. Example: Shark and Remoras

6. Parasitism Parasitism is the symbiotic relationship in which one organism benefits and the other is harmed. Example: Tick- outside Tapeworm- inside a human Wasp and Caterpillar

7. Why do most parasites not kill their host? Without the host the parasite would die.