BIO 101 1nd Edition Lecture 22 Outline of Last Lecture II Biosphere III Carbon cycle IV Nitrogen cycle Outline of Current Lecture V Misleading passages VI Global Warming VII Ozone VIII What is ozone Current Lecture A Misleading statement in your book in response to changing environments organisms may change their anatomy adjusting body shape or structure o POPULATIONS can change over generations any organisms respond to changing conditions by changing their physiology the functioning of body components o They are talking about processes that already exist in your body Page 330 331 The Greenhouse effect is caused by Heat being trapped in the atmosphere The greenhouse effect Solar energy enters Earths atmosphere as sunlight Some of the heat energy escapes into space These notes represent a detailed interpretation of the professor s lecture GradeBuddy is best used as a supplement to your own notes not as a substitute Some heat is reflected back downward by greenhouse gases in the atmosphere Much of this solar energy is reflected back into the atmosphere as heat energy Is the greenhouse effect natural or man made BOTH The natural greenhouse effect raises the temperature on earth by 95 degrees F The man made greenhouse effect causes the temperatures to rise more Enhanced greenhouse effect The imbalance of gases due to the burning of fossil fuels is causing more energy to be trapped by the atmosphere thus raising the temperature of the earth Global warming is Global climate change Since 1880 global surface temperatures have increased Atmospheric greenhouse gas levels are higher now than at any time in the past 800 000 years Correlation does not prove causation Circumstantial evidence and a hypothesized cause for climate change As the concentration of Co2 increases the temperature is also increasing however this is not proof that the co2 concentration is the only cause of rising temperatures Regardless of the cause of global warming the climate is changing There are many effects Ozone is A man made chemical a natural chemical and harmful for life on earth What is ozone Ozone is a colorless odorless gas made of oxygen Most oxygen in the air is O2 two joined oxygen atoms This is the oxygen that sustains life Ozone is O3 Ozone is ready to react With whatever it meets This makes it very useful for cleaning But when it comes in contact with living tissues like our lungs it can cause damage like a sunburn in your lungs and illness Ozone can also corrode building materials statues and monuments and natural rock features in the landscape so it is harmful at ground level and in the lower atmosphere Ozone is helpful The ozone layer protects life on earth from the suns harmful ultraviolet rays But the ozone layer is 10 30 miles above the earth this is far about the air that we breathe This protective shield becomes weaker when certain gases are able to travel to the ozone layer and destroy the ozone molecules These destructive gases come from products like refrigerators air conditioners and some cleaning products