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Unformatted text preview: Biology Midterm Up To Final Tues 4/21 : Earths Diverse Ecosystems Thurs 4/23: Global demands for food; looking ahead to final Tues 4/28: Human impact on water and xenobiotics Thurs 4/30: 6 th mass extinction. Ch 30 Tues 5/5: No LECTURE Thurs 5/7: Importance of biodiversity; course evaluation Review 5 until 7 pm Monday 5/11 or Tuesday 5/12 or Wednesday 5/13 5/14: FINAL Exam 9-12 It was a pleasure to work with you guys! And if I ever run for anything, vote for me!! LOL jk. Best Wishes, Karen Kleriga p.s. Lectures are in order and separated by a line, however, this time it is not color-coded. 4/21/09 A little more on global climate change Four Kinds of Coal Lignite: low heat, medium sulfur Subbituminous: higher heat, low sulfur Bituminous: Still higher heat, high sulfur Anthrocite: highest heat, low sulfur Texas has worst air pollution in the US Know Your Planet: Climate and Biomes Factors Determining Climateknow those in packet The North Pole is a desert- know the various factors that contribute to climate El Nino Effect- know this Earths major Biomes Determining Factors: Temp, Latitude, amount of perciptation, seasonality of perceiptation, length of growing season Tundra- Above 65 degrees there is rock or ice or tundra. Alkaline Tundra Taiga (Coniferous Forest)- Trees that have needles like pine, Deciduous trees drop their leaves during winter time; a problem they have is a short of water- the needles help store water; just below the tundra Grassland- Savanna- Lots of water; when you think of where giraffes and zebra grazing; in Africa; Desert- Covers a range of dryness; sahara, central asia, central Australia Temperate Decidous Forests- highly seasonal Temperate rain forests- lots of green; not very seasonal Tropical Dry Forests- Can be very seasonal Tropical Rainforests- Large amount of rain falling continually, south America- amazon, not very seasonal; most species in world arent living in rainforests; top layer is a tree up to 250 feet tall Chaparral Water and Productivity (defined as grams of green biomass per square meter) Class I- in between mountains, not productive, growing season short, rain shadow effect, A Tale of two lakes o Deep Northern lake= class II o Shallow east Texas lake= Class III More species in it than all west texas combined; doesnt freeze over in the winter time; hitting where decomposers are; extremely productive Productivity of lower rivers, floor plains, and estuaries all influenced heavily by dams; during flood the good stuff will deposit, highly productive of potassium, carbon 04/21/09 Fossil Fuels as Pollutants Coal is the dirtiest of the fossil fuels and it was the first to play a major role on the worlds energy stage Four Kinds of Coal Lignite: low heat, medium sulfur Subbituminous: higher heat, low sulfur Bituminous: still higher heat, high sulfur Anthrocite: highest heat, low sulfur Know Your Planet: Climate and Biomes...
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This note was uploaded on 02/19/2010 for the course BIO 301 L taught by Professor Fritz during the Spring '09 term at University of Texas at Austin.
- Spring '09