Human Impact on the BiosphereHuman Impact on the Biosphere

Keywords

• Renewable pollution biodiversity

• Nonrenewable soil erosion extinction

• Resource desertification endangered species

• Deforestation biological magnificationconservation acid rain

• Sustainable use of resources

Natural ResourcesNatural Resources

• Renewable resourcesRenewable resources

• Nonrenewable resourcesNonrenewable resources

Human activities affect the Human activities affect the

quality and quantity of our quality and quantity of our

renewable and nonrenewable resources.renewable and nonrenewable resources.

Sustainable Use of ResourcesSustainable Use of Resources

SustainabilitySustainability

- intelligent and responsible management - intelligent and responsible management and conservation of our resourcesand conservation of our resources

WastesWastes

•Biodegradable wastesBiodegradable wastes – materials that can be broken down by materials that can be broken down by

microorganismsmicroorganisms– e.g. organic wastes (sewage and scraps of e.g. organic wastes (sewage and scraps of

food)food)

•Non-biodegradable wastesNon-biodegradable wastes – can not be broken down by natural processes can not be broken down by natural processes

or are broken down very slowlyor are broken down very slowly– e.g. asbestos, glass, certain plastics and e.g. asbestos, glass, certain plastics and

metals, radioactive wastes and chemicalsmetals, radioactive wastes and chemicals

• pollutants accumulate in the tissues of organismspollutants accumulate in the tissues of organisms

• further concentrated up the food chain (because further concentrated up the food chain (because the biomass at a given trophic level is produced the biomass at a given trophic level is produced from a much larger biomass ingested from the from a much larger biomass ingested from the level below)level below)

• e.g. pesticides and industrial waste productse.g. pesticides and industrial waste productsDDT was once used to prevent malaria, yellow fever, lice and the spread of insect pests DDT was once used to prevent malaria, yellow fever, lice and the spread of insect pests DDT poisoning DDT poisoning

in fish and birdsin fish and birds

Biological MagnificationBiological Magnification

Land ResourcesLand Resources

• Land pollutionLand pollution

• Soil erosionSoil erosion

• DesertificationDesertification

• DeforestationDeforestation

Water ResourcesWater Resources

• Chemical ContaminationChemical Contamination

• Sewage ContaminationSewage Contamination

• Thermal PollutionThermal Pollution

Air ResourcesAir Resources

• SmogSmog

• Acid RainAcid Rain

• Greenhouse EffectGreenhouse Effect

• Ozone DepletionOzone Depletion

BiodiversityBiodiversity

• Ecosystem diversityEcosystem diversity

• Species diversitySpecies diversity

• Genetic diversityGenetic diversity

Threats to BiodiversityThreats to Biodiversity

• Demand for wildlife productsDemand for wildlife products

• Habitat destructionHabitat destruction

• PollutionPollution

• Introduction of exotic Introduction of exotic speciesspecies

Conservation EffortsConservation Efforts

• ReforestationReforestation

• Endangered Species and Endangered Species and Protected AreasProtected Areas

• RecyclingRecycling

• Cleaning up the environment Cleaning up the environment and keeping it clean.and keeping it clean.

Guide questionsfor The Cove 1. How did you feel when you learned that Ric

O’Barry was the pioneer in dolphin training? Is what he is doing already late?

2. How can we stop organizations such as the IWC that have vested interest over problems they are “finding a solution”?

3. What was your first reaction about the dolphin trade? Did you think that Americans were just meddling with Japanese tradition? Were you enlightened after the film?

Group Presentation

• A. Spontaneous generation

• B. Biogenesis

• C. Chemosynthetic theory

Evaluation

• Creativity- 10 pts

• Content- 10 pts

• Preparedness- 10 pts

• Group Participation- 10 pts

• Use of Time- 10 pts

Terms

• Spontaneous generation Biogenesis• Chemosynthesis Pre-cells• Coacervated Microspheres Liposomes• Amino Acids Macromolecule Unicellular• Asexual Sexual Aquatic• Reproduction Heterotroph