1. Tackling the ProblemsFeb 17 Flow Chart 1. Collect Assignment #2 2. Tackling the Problems 3. Our Main Environmental Problems 4. Overpopulation 5. Resource Depletion 6. Pollution

2. Our Main Environmental Problems Main threats to the global environment: Overpopulation Overpopulation

3. Our Main Environmental Problems Main threats to the global environment: Overpopulation Overpopulation Resource depletion Resource depletion

4. Our Main Environmental Problems Main threats to the global environment: Overpopulation Overpopulation Resource depletion Resource depletion Pollution (air, water and soil), global warming, ozone depletion and acid rain Pollution (air, water and soil), global warming, ozone depletion and acid rain

5. Our Main Environmental Problems Main threats to the global environment: Overpopulation Overpopulation Resource depletion Resource depletion Pollution (air, water and soil), global warming, ozone depletion and acid rain Pollution (air, water and soil), global warming, ozone depletion and acid rain Reduction in biodiversity and extinction Reduction in biodiversity and extinction

6. Our Main Environmental Problems— Overpopulation Any increase in population directly affects the environment. Any increase in population directly affects the environment. The pollution of natural environments, declining energy reserves, reduced biodiversity and wildlife extinctions are all problems related to human population growth The pollution of natural environments, declining energy reserves, reduced biodiversity and wildlife extinctions are all problems related to human population growth

8. YouTube - Human Population Growth YouTube - Human Population Growth YouTube - Human Population Growth YouTube - Human Population Growth

9. Our Main Environmental Problems— Resource Depletion Natural resources include water, air, soil, minerals, fossil fuels, plants, animals and sunlight. Natural resources include water, air, soil, minerals, fossil fuels, plants, animals and sunlight. Some natural resources cannot be replaced once they are used. Some natural resources cannot be replaced once they are used.

10. Resource Depletion Non-renewable resources not replenished by natural processes as they are taken from the Earth. not replenished by natural processes as they are taken from the Earth.

11. Resource Depletion Non-renewable resources not replenished by natural processes as they are taken from the Earth. not replenished by natural processes as they are taken from the Earth. Examples are oil and natural gas, coal and the ores of various metals, such as zinc and copper. Examples are oil and natural gas, coal and the ores of various metals, such as zinc and copper.

12. Resource Depletion Renewable resources are continually being replaced as they are used. are continually being replaced as they are used.

13. Resource Depletion Renewable resources are continually being replaced as they are used. are continually being replaced as they are used. Light energy from the Sun provides us with a limitless supply of solar energy, which feeds the Earth's plants and animals. Light energy from the Sun provides us with a limitless supply of solar energy, which feeds the Earth's plants and animals.

14. Resource Depletion Renewable resources are continually being replaced as they are used. are continually being replaced as they are used. Light energy from the Sun provides us with a limitless supply of solar energy, which feeds the Earth's plants and animals. Light energy from the Sun provides us with a limitless supply of solar energy, which feeds the Earth's plants and animals. Resources derived from these living organisms are therefore considered renewable forms of resources. Resources derived from these living organisms are therefore considered renewable forms of resources.

15. Resource Depletion Renewable resources are continually being replaced as they are used. are continually being replaced as they are used. Light energy from the Sun provides us with a limitless supply of solar energy, which feeds the Earth's plants and animals. Light energy from the Sun provides us with a limitless supply of solar energy, which feeds the Earth's plants and animals. Resources derived from these living organisms are therefore considered renewable forms of resources. Resources derived from these living organisms are therefore considered renewable forms of resources. Solar, tidal, wind power and geothermal energy, can also be considered renewable. Solar, tidal, wind power and geothermal energy, can also be considered renewable.