Question 1. Compare and contrast passive diffusion, facilitated diffusion and active transport.
Question 2. Identify the three major organs involved in excretion. For any one of these organs explain the mechanisms that facilitate excretion.
Question 3. Identify a chemical accident you may be familiar with and discuss the toxic substance involved and any actual or potential effects as a result of exposure You may research an accident if needed. An excellent source of material may be found at www.csb.gov.