3 Issues continuedPopulation Growth: As the population continues to grow so does the demand for resources. (Improvements in medicine, agriculture and sanitation)Pollution: Any change to the environment that has a negative effect on living things.
4 Environmental Issues Types of Environmental Issues: Resource Use PopulationPollutionResource Use:Renewable Resources: Are naturally replaced in a relatively short time. (trees)Nonrenewable Resources: Natural resources that are not replaced as they are used. (Oil, natural gas, coal)
5 Approaches to Environmental Issues Can be: Personal - Local - National -GlobalCar - Landfill oil drilling Earth’s atmosphereEnvironmental Science: Is the study of the natural processes that occur in the environment and how humans affect them.
6 Different ViewsDevelopment Viewpoint: The belief that humans should be able to freely use and benefit from all of Earth’s resources.Preservation Viewpoint: The belief that all parts of the environment are equally important, no matter how useful they are to humans.Conservation Viewpoint: Is the belief that people should use resources from the environment as long as they do not destroy those resources.
7 Review List the three main types of environmental issues? Resource management, population growth & pollutionDefine environment science:The study of natural processes that occur in the environment and how humans can affect those processes.
8 Section 2 Forest and Fisheries Because new trees can be planted to replace trees that are cut down, forest can be renewable resources.
9 ForestClear-cutting: Is the process of cutting down all the trees in an area at once.Select cutting: Cutting down only some trees in a forest and leaving a mix of tree sizes and species behind.Sustainable yield: Is a regular amount of a renewable resource such as trees that can be harvested without reducing the future supply.
10 FisheriesFishery: An area with a large population of valuable ocean organisms.Managing fisheries for a sustainable yields includes setting fishing limits, changing fishing methods, developing aquaculture techniques, and finding new resources.
11 BiodiversityBiodiversity: The number of different species in a given area.Factors that affect biodiversity in an ecosystem include area, climate, and diversity of niches.Keystone Species: A species that influences the survival of many other species in an ecosystem.
12 Extinction of SpeciesEndangered Species: Species in danger of becoming extinct in the near future.Threatened Species: Species that could become endangered in the near future.
14 Causes of ExtinctionHumans can also threaten biodiversity. These activities include habitat destruction, poaching. Pollution, and introduction of exotic species.Habitat Fragmentation: Breaking larger habitats into smaller, isolated pieces. Or fragments.