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

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

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?

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

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

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

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