BLOCK 1:  Changes in Living Things

This introductory unit consists of topics centered around tools that scientists use in the field.  They include:

        Unit 1:  Classification

                Biotic and abiotic factors

                Cell Structure and Microscopy

                 Levels of Classification

                Dichotomous Keys

        Unit 2:  Organization of the Ecosystem

                Spheres of the Earth

                Ecosystem levels

                Niches

                Energy Flow (food chains and webs)

        Unit 3: Interactions within the Ecosystem

                Relationships

                Limiting Factors

                Human Impact

Websites:

http://www.cellsalive.com/

http://library.thinkquest.org/11353/ecosystems.htm

http://www.epa.gov/

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