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The document discusses four environmental issues: 1) Acid rain is formed when sulfur and nitrogen oxides combine with water, forming acids that can damage structures, crops, forests and aquatic life. 2) The greenhouse effect refers to the atmosphere trapping heat from the sun, warming the Earth's surface. Increased CO2 and methane from human activities like burning fossil fuels and deforestation enhance the greenhouse effect and global warming. 3) Sulfates and nitrates from air pollution impair visibility and increase illness from particulate matter. 4) Ultraviolet radiation from the sun has different types that can impact human health.
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презентация1
- 1. ACID RAIN, GreenhouseEffect, Global Warming and Ultraviolet Radiation
- 2. Acid Rain, formof air pollution created when oxides of sulfur and nitroger combine with atmospheric moisture, yielding sulfuric acid and nitric acid, which ma be deposited in rain. snow, fog. or 2 dry forms
- 3. Acid rain haseroded structures, injured crops and forests, am threatened or depleted life in freshwater lakes. EGEE 102 - Pisupati 3
- 4. Visibility • Sulfatesand nitrates that form in the atmosphere from sulfur dioxide (SO2) and nitrogen oxides (NOx) emissions contribute to visibility impairment, meaning we can't see as far or as clearly through the air. Sulfate particles account for 50 to 70 percent of the visibility reduction EGEE 102 - Pisupati 4
- 5. Human Health •Elevated levels of fine particles increase illness and premature death from heart and lung disorders, such as asthma and bronchitis. • reducing the nitrogen oxides available to react with volatile organic compounds and form ozone EGEE 102 - Pisupati 5
- 6. Effects of AcidRain EGEE 102 - Pisupati 6
- 7. Greenhouse Effect, termfor the role the atmosphere plays in warming the earth' surface
- 9. How do humansincrease carbon dioxide levels in the atmosphere? Burning fossil fuels releases the carbon dioxide stored millions of years ago. Most of the increased carbon dioxide comes from fossil fuels Deforestation releases the carbon stored in trees. Less trees also means less carbon dioxide can be removed from the atmosphere.
- 10. How do humansincrease methane levels in the atmosphere? Increased rubbish in landfill The amount of methane in the atmosphere has increased by two and a half times since the Industrial Revolution. Methane is produced when bacteria rot organic matter Increased livestock farming Increased rice growing Methane is also released when fossil fuels are extracted
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