L.18.4 Cycling of Matter and Energy

• Explain that living systems obey the law of conservation of mass and the law of conservation of energy.

• Describe the general processes of photosynthesis or cellular respiration (aerobic and anaerobic).

• Describe the role of light, carbon dioxide, water, and chlorophyll in the process and products of photosynthesis.

• Describe how matter is transferred in the carbon cycle.