BIO 20 Final Exam: Questions & Answers: Guaranteed A+ Score Solution

What is the importance of the Phosphorous Cycle? (Ans – Phosphorous is an essential component of bones and teeth and is a part of cellular DNA and ATP. Phosphorous is the only cycle that does not cycle through the atmosphere. What are factors that contribute to Acidic Deposition? (Ans - Burning fossil fuels such as oil, coal and natural gas. This becomes what is called "sour gas". Difference between Greenhouse Effect and Global Warming. (Ans - Greenhouse effect are the process by which atmospheric gases trap heat close to Earth's surface and prevent it from escaping into space. Global Warming however is an increase in the average temperature of the earth's atmosphere (especially a sustained increase that causes climatic changes). What is the process by which ozone is destroyed? (Ans - Ozone Depletion which is the thinning of Earth's ozone layer caused by CFC's leaking into the air and reacting chemically with the ozone, breaking the ozone molecules apartList the most common greenhouse gases (Ans - Water Vapour, Carbon Dioxide, Methane, CFC's, Nitrous Oxides, Ground Level Ozone. List the industrial functions of Ozone. (Ans - Water purification, odor treatment, sewage treatment, sterilizing, and bleaching. What are the major ozone depleting substances? (Ans - CFC's (refrigeration) Methane (decomposition/mining) Nitrous oxides (Combustion from fossil fuels) Halons (Fire Extinguishers) How can excessive UV exposure affect animal and plant life? (Ans - It makes them go blind (animals) and will kill both the animals and the plants. Why is extensive ozone depletion occurring at the poles and in areas of volcanic eruptions? (Ans - due to unique atmospheric and chemical conditions that