1. Use the first and second laws of thermodynamics to explain why each ecosystem needs a continuous supply of solar energy?

2. Explain how deforestation of tropical rainforests play a large role in excess co2 in the atmosphere.

3. Athletes in all sports focus on aerobic conditioning. Use your knowledge of aerobic respiration and lactic acid fermentation to explain why performance is improved if more oxygen can reach the cells for longer periods of time due to excellent conditioning?