Chapter 3 The Biosphere What is Ecology PreQuiz

Chapter 3: The Biosphere What is Ecology?

Pre-Quiz: Is it living? Make two lists and divide the following items as living or nonliving. Write 2 sentences about the rules you used to decide what it means to be living or non-living. Tree Rock Fire Child Wind Rabbit Cell Cloud Feather Sun Grass Mushroom Seed Potato Egg Leaf Bacteria Butterfly Cocoon Molecule Fossil Yogurt Mitochondria River Cut flowers DNA Virus Hibernating Bear

The Biosphere • A biosphere includes all areas where life exists from the atmosphere to the deep ocean Life on Mars? http: //www. msn. com/en-us/news/technology/life-on-mars-nasa-says-planetappears-to-have-flowing-water/ar-AAe. SEv. U? li=AAa 0 dz. B&ocid=onepro

3. 1 What is Ecology? • “Oikos” is the Greek word for “house” • Ecology is the study of the earth’s “houses” or habitats and the things that live in them.

Levels of Organization • Biosphere of Earth • Biome • Ecosystem • Community • Population • Species • Individual

Biotic and Abiotic Factors • A biotic factor is living • An abiotic factor is non-living

Ecological Methods • Observation: Develop questions from what you see or wonder about an organism or its habitat/ecosystem • Experimentation: Test a question in an artificial environment or within the confines of a natural habitat • Modeling: Use to see what could happen for large areas or long periods of time

3. 2 Energy, Producers and Consumers • Primary producers are autotrophs: • Auto = Self • Troph = Feeder • They get energy from nonliving sources (like sunlight) • Build sugars from CO 2 and water or other chemicals