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Name ________________________________________ Class _________ Date __________________ Chapter 3 The Biosphere : Section 3-1 What is Ecology? (Pages 63-65) Interactions and Interdependence (p. 63-65) What is ecology? ___________________________________________________________ What does the biosphere contain? ______________________________________________ Levels of Organization (p. 64) 3. Why do ecologists ask questions about events and organisms that range in complexity from an individual to the biosphere? _________________________________________ 4. Complete the table about levels of organization. Level Definition Species Group of individuals of the same species in the same area Community Ecosystem Group of ecosystems with the same climate & dominant communities 5. What is the highest level of organization scientists study? __________________________ Ecological methods (p. 65) 6. What are the three basic approaches scientists use to conduct modern ecological research? a. ______________________ b. ______________________ c. _____________________ 7. Why might an ecologist set up an artificial environment in a laboratory? __________________________________________________________________________ __________________________________________________________________________ 8. Why are many ecological phenomena difficult to study? ___________________________ __________________________________________________________________________ 9. Why do ecologists make models? ____________________________________________ __________________________________________________________________________ 10. True or False? “An ecological model may consist of a mathematical formula. _________