Presentation on theme: "Bell Ringer Which line is the predator? Which line is the prey? What happens to the predator population when the prey population decreases? What causes."— Presentation transcript:
1Bell RingerWhich line is the predator? Which line is the prey? What happens to the predator population when the prey population decreases? What causes the prey population to decrease?
2T-Chart Main Idea My Details Predator-Prey Relationship -If prey population decreases then predator population decreases
3Humans in the Biosphere Chapter 6Humans in the Biosphere
4The Effect of Human Activity Humans affect global environments through:AgricultureDevelopmentIndustryResources that are affected:SoilWaterAtmosphere
5Agriculture One of the most important inventions in human history Encouraged the growth of modern civilizationsMonoculture- planting the same crop in the same spot year after year.Negatives:Use of water, soil, and fossil fuels
6Development Americans live in dense populated urban areas Too crowded Developed SuburbsMore People = More WasteNegatives:Consumes farmlands, destroys natural habitatsWaste affects air, water, and soil
7Industrial Growth Inspired by the Industrial Revolution of the 1800s Needed to provide the United States with up to date technologyNegatives:Requires A LOT of energyIndustries have traditionally discarded wastes directly into the air, water, soil
8Sustainable Development Sustainable Development- provides for human needs while preserving the ecosystems that produce natural resourcesShould do more than just enable people to survive, it should help them improve their situation.Examples: Solar Power, Wind Energy, Etc.
9Renewable and Nonrenewable Resources Renewable Resources- can be produced or replaced by a healthy ecosystemExample: white pine tree, can grow back after being cut downNonrenewable Resources- Natural processes can not replenish them in a reasonable amount of time.Example: Fossil fuels take millions of years to renew
10Class AssignmentSilently, list how humans are affecting the south shore or greater Chicago area environment. Give an example of each.
11ClosureWrite the conclusion section for our class MEL-Con. Generate 2 ideas for sustainable development and how it might help solve the problems that we listed earlier.
12Bell RingerWhat three human activities have transformed the biosphere?USE YOUR NOTES----- Meeting Notes (11/8/11 12:50) -----
136.1 Review 3 human affectivities that affect biosphere: Agriculture- FarmingDevelopment-Urbanization, creating suburbsIndustrial Growth-Factories, mass productionResources that are affected:SoilWaterAtmosphere
146.2 Using Resources Wisely Key Questions:Why is soil important, and how do we protect it?What are the primary sources of water pollution?What are the major forms of air pollution?
15Soil Resources Soil Erosion-removal of soil by water or wind Dust BowlDesertification- Process of farmland turning into desertCauses:Farming, overgrazing, drought, and climate change
16Soil Resources Deforestation-Loss of forests Leads to severe soil erosionTrees help keep the soil in place, absorb carbon dioxide, and protects fresh water suppliesOver half the worlds old-growth forest have been lost to deforestation
18Freshwater Resources Humans depend on fresh water for: Drinking water IndustryTransportationEnergyWaste disposal
19Water PollutionPollutant-a harmful material that can enter the biospherePoint source pollution-enters from single sourceExample: Oil spill or factoryNonpoint source pollution: enters from many sourcesExample: Run-off from the road or chemicals released into the air by cars and factories
20Main Sources of Pollution Industrial and agriculture chemicalsResidential sewageNonpoint sources
21Biological Magnification Occurs when a pollutant, such as DDT, is picked up by an organism and is not broken down or eliminated from its body.Travels through the energy pyramid
22Water Pollution What are the primary sources of water pollution? How can we stop water pollution?
23Class AssignmentBy yourself, work on the chapter 6.2 handout
24Class ActivityIndividually, list a couple human activities that affect the south shore community environment.
25Class ActivityAs a group, discuss the factors that you just listed. Group every factor into categories.
26Bell Ringer List two ways to prevent soil erosion. List 2 ways to reduce water pollution.USE YOUR NOTES
276.2 ContinuedWhat are the major forms of air pollution?
28Atmospheric Resources AtmosphereAbsorbs harmful ultraviolet radiationProvides oxygenRegulates global temperature (without greenhouse effect, earth would be 30 degrees Celsius cooler)
29Air Pollution Common forms of air pollution are: Smog Acid rain Greenhouse gases
30Air PollutionSmog- Gray-brown haze formed by chemical reactions among pollutants released into the air
31Acid Rain Acid Rain Caused by releasing nitrogen and sulfur into air Combine to form nitric and sulfuric acidCan kill plantsCan change composition of soil
36Bell RingerGet your notes out and study for the 6.1 and 6.2 vocabulary quiz.(5 minutes)
37Corners ActivitiesAfter hearing the statement read by your teacher, please walk respectfully to the corner that you agree with most: Strongly Agree, Agree, Disagree, Strongly Disagree
38Statement #1The laws against trading ivory should be lifted. This will improve the global economy and get the United States out of this recession.
39Statement #2Crops are needed in order for humans to survive. Even though growing crops can cause soil erosion and hurt natural habitats, humans should continue to grow crops because they are needed to help humans survive.
40Statement #3Humans are the main reason why some natural habitats are no longer able to support the plant and animal populations that were once in that natural habitat.
41BiodiversityBiodiversity- total of all the genetically based variation in all organisms in the biosphere.
42Types of BiodiversityEcosystem diversity- variety of habitats, communities, and ecological processesSpecies diversity- number of different species in the biosphere, or in a particular area.Genetic Diversity- sum total of all different forms of genetic information carried by a particular species
43Threats to Biodiversity Five threats:Altered Habitats- habitats eliminated for urban or agriculture reasonsHabitat Fragmentation-development causes habitats to splitHunting and the Demand for Wildlife Products- Causes extinctionIntroduced Species-Example- Asian CarpPollutionExample- DDT (Biological Magnification)Climate Change
44Conserving Biodiversity Ecological hot spot- place where significant numbers of species and habitats are in immediate danger of extinction.
45Class Assignment Complete the 6.3 worksheet Use your textbook and notes
46Bell RingerWhat are the five major threats to biodiversity? (Use your notes)Who is responsible for these threats on biodiversity?
47Homework ReviewTake out your chapter 6.3 worksheet for review
48Causes Deforestation Air Pollution Water Pollution Development Industrial Growth
49Bell RingerExplain why a paper company would say that deforestation is not as bad as people make it out to be.At least 3 sentencesUse “Lorax” notes/worksheet
50Chapter 6.4 Key QuestionsHow does the average ecological footprint in America compare to world’s average?How can ecology guide us toward a sustainable future?
51Ecological Footprints Ecological Footprint-total amount of functioning ecosystem needed to both provide the resources a human population uses, and to absorb the wastes that population generates
56Comparing FootprintsAccording to the diagram, the average American has an ecological footprint over four times larger than the global average.Twice the size of EnglandMore than twice the size of JapanSix times the size of China
57Key QuestionsHow does the average ecological footprint in America compare to world’s average?How can ecology guide us toward a sustainable future?