Human Impacts on the Environment

1
Environmental Care

• Human Impacts on the Environment

2
What is the Environment?

• The Environment is the world around us
• It is where we live, where we go to school and
  work
• It everything we see and everything we touch

3
Why should we take care of the environment

• We only have one earth and we all have to share
  it
• If we want to live in a clean and beautiful world
  then we have to take care of it
• To protect our resources
• For future generations

4
Human Impacts on the Environment

• Air Pollution
• Water Pollution
• Industrialisation
• Acid Rain
• Deforestation
• Global Warming

5
Air Pollution

• Air is the ocean we breathe. Air supplies us with
  oxygen which is essential for our bodies to live
• Human activities can release substances into the
  air, some of which can cause problems for humans,
  plants, and animals
• Causes of air pollution
• Burning of fossil fuels
• Car and vehicle emissions
• Indoor activities such as using a dishwasher,
  washing machine and tumble dryer and playing a
  video games. These all rely on electricity and
  often fossil fuels are burned in generating
  electricity.

6
Water Pollution

• Oil Spills
• Gasoline Spills
• Acid Rain
• Waste and Litter
• Sewage

7
Industrialisation

• Population growth leads to industrialisation
• Burning of fossil fuels
• Non-renewable resources
• Pollution
• Increased CO² levels

8
Acid Rain

• The burning of fossil fuels releases sulphates
  and nitrates into the air
• Sulphates and nitrates mix with the water vapour
  in the air and form sulphuric and nitric acid
  which falls as acid rain

9

• Lakes and ponds can become so acidic that no life
  can survive in them

10
Deforestation

• Population growth leads to deforestation
• People cut down trees to build homes
• This leads to the loss of natural habitat.
• Leads to a loss of Oxygen producers and Carbon
  Dioxide eliminators

11
Global Warming

• Humans have a major impact on the rate of global
  warming
• The burning of fossil fuels (coal, gas, oil)
  produces greenhouse gases (carbon dioxide,
  methane, nitrous oxide, water vapour)
• These greenhouse gases trap the heat and light
  from the sun in the earths atmosphere,
  increasing the temperature of the earth

12
(No Transcript)