1. Ecosystems

2. Environment and Habitat Environment Abiotic factors Biotic factors Habitat Specific place where organism is found Marine - characterized primarily by abiotic features

3. Homeostasis

5. Abiotic Factors Sunlight Temperature Salinity Pressure Metabolic requirements Metabolic wastes Organism’s ability to tolerate changes in these factors  distribution in marine environment

6. Population Group of the same species Occupy specified area Rely on same resources Influenced by same environmental variables

11. http://www.youtube.co m/watch?v=8YtC- VagE4Y

13. 1° Producers 1° Consumers 2° Consumers 3° Consumers 4° Consumers 5° Consumers 6° Consumers