Global Environmental Issues

5 Main Environmental Issues

• Population Growth

• Poverty & Hunger

• Greenhouse Effect & Global Warming

• Thinning of the Ozone Layer

• Destruction of Rain Forests

Population Growth

• ~ 7 billion people on Earth

• Grows by 6 million each month = 150 each minute

• ~ 314 million in U.S.

• ~ 6.5 million in TN

• ~ 171,000 in Chattanooga, TN

• ~ 9,100 in Collegedale, TN

Why is the population growing?

Problems of Population Growth

• Not enough food to eat

• Houses may cover land that can be farmed

• Country might have few natural resources

• Droughts may kill crops

• Health services increases

Developing vs. Developed Country

• Developing Country

• Developed Country

harpercollege.edu

Population Growth Activity!

The Greenhouse Effect

https://www.youtube.com/watch?v=BPJJM_hCFj0

Global Warming Negative Effects

Environmental

•Heat waves

•Heavy rainfall

•Severe droughts

Health

•Contaminated water supplies

•Spread of infectious disease

Thinning of the Ozone Layer

• Oxygen layer that protects the Earth from UV rays from the sun

• UV rays skin cancer, ➔cataracts, and can harm farms and forests

• Chlorofluorocarbons (CFCs) = leading cause of ozone thinning

chemwiki.ucdavis.edu

Destruction of Rain Forests

• Brainstorm in groups of 2 or 3 at least 5 ways global warming will negatively affect people’s heath if it continues.

• Ways to protect the environment and sustain its natural resources for current & future generations

• Actions include reducing pollution, conserving resources & energy, and reducing consumption & waste

• Benefits: Save $, improve health, & help improve quality of life

“Going Green”

Homework

• Go home and complete a physical activity that promotes the principle of “going green.”

• Write a 1/2 page (7-10 sentences) report about your experience, including what you did and your thoughts.