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Keywords:

Cardiovascular system, Circulatory system, Photosynthesis, Plants, Respiration, Lungs, Breathing, Closed environments, Closed ecosystems, Interdependence, Living in space

Mediator:

Secondary school teachers

Language:

English

General

Essential Resources: 

Test tubes ; Aquatic snails ; Stoppers ; Bromthymol blue solution ; Stalks of Elodea ; 1 or 2 liter bottles of club soda ; Photocopies of "Student Record Sheet; " "Analyzing Your Data; " and "Excess Oxygen Experiment Observations" (shown within resource); Overhead transparency of "Setting Up the Test Tubes" (shown within resource)