Unit 6. The environment

Unit 6: The environment
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Air pollution
We cause air pollution directly through our use of electricity, fuels, and transportation.
We also cause air pollution indirectly, when we
buy goods and services that use energy in their production and delivery. Most of this air pollution we cause results from the burning of fossil fuels, such as coal, oil, natural gas, and gasoline to produce electricity and power our vehicles.
Carbon dioxide (CO2) is a good indicator of how much fossil fuel is burned and how much of other pollutants are emitted as a result. Using carbon dioxide as an example, the average family in our country causes air pollution in the following ways:
Health Effects of the Pollution We Cause
Exposure to emissions of lead, mercury, sulfur dioxide, particulate matter, carbon dioxide, and ozone-forming nitrogen dioxides are hazardous to public health. Toxic compounds, like mercury and lead, poison organ systems and can lead to brain damage and death…
Lungs cancer
Pink eyes
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Environmental Effects
Climate change on a global scale has been attributed to increased emissions of carbon dioxide (CO2), a greenhouse gas. A global average temperature rise of only 1C could have serious implications. Possible consequences include melting of polar ice caps; an increase in sea level; and increases in precipitation and severe weather events like hurricanes, tornadoes, heat waves, floods, and droughts…
Economic Effects
The effects of air pollution on human health and the environment have economic impacts. According to the Healthy People 2000 report, each year in VietNam:
The health costs of human exposure to outdoor air pollutants range from 40 to 50 billion VND.
An estimated 50,000 to 120,000 premature deaths are associated with exposure to air pollutants.
People with asthma experience more than 100 million days of restricted activity, costs for asthma exceed 4 billion, and about 4,000 people die of asthma.
Economy goes down
What We Can Do
For example:
-Planting more trees
-Use recycled items
-Encourage people to travel by public transport to minimize congestion and transportation facilities, thereby reducing the density of dust and other wastes from the combustion of petrol fuels in the air…
Do our best to save the earth