Sep 12, 2006 · answer: Experiments answer questions using controls and variables; observations do not use variables and controls but use the senses to collect data. Section Review 3-2 1. The sun is the main source of energy used by life on Earth. 2. Some organisms use the energy stored inside inorganic compounds. 3. Energy flows
directions. Chapter 2 explores the value of citizen science both as an environmental research technique and as a route to reconceptualising the environmental governance system. Chapter 3 considers the practical implications of designing and managing a successful citizen science project within the environmental sciences, providing a summary of ...
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