BIOL 1050 Lecture 33 Outline of Last LectureI. PollutionII. Conservation biologyIII. Climate and global warming Outline of Current LectureI. Global warming II. Strategies for solution Current LectureI. Global Warming a. Increased amounts of CO2 in atmosphere is causing global warmingi. A slow but steady rise in Earth’s average surface temperature b. What about natural variation in CO2 levels and temperatures?i. Air bubbles in ice trap CO21. Can sample atmosphere from long ago c. Ice cores showi. More CO2 in atmosphere now than at any time in the past 400,000 yearsii. Higher levels of CO2 are correlated with higher temperatures d. Effects of global warmingi. Ice masses melt which raises sea levelii. Rain and snow fall patterns changediii. Increasing storm intensityiv. Extinctions e. Ice cap melting f. Biological systems are also the effected of climate chancei. Trees and flowersii. Migratory birdsiii. Birds and butterfliesg. Average US temps could increase as much as 9 degrees by the end of the century h. U.S. has 4% of world’s population, but produces almost 25% of the CO2 emitted by burning fossil fuelsi. Households are big contributors to climate change, i.e. global warmingi. 40% of all U.S. greenhouse gas emissions come from households1. VehiclesThese 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.2. Home heating3. Electricity II. Strategies for solutiona. Buy high efficiency appliances b. Plant shade trees around your home to decrease energy consumption and to remove carbon dioxide by photosynthesisc. Using a push mower instead of a power mowerd. Recycle glass bottles, aluminum cans, plastic, newspaper and cardboarde. Carpool two days per weekf. Buy food and other products with reusable or recyclable packaging, or reduced packaging to save the energy required to manufacture new containersg. Drive an energy efficient vehicle, SUV’s aver 16 miles per gallon while smaller cars can average 25 miles per gallonh. Walk 10 miles per week instead of
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