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Understanding main issues and details
1. Analyze main issues:
a. Compare the three methods of output control and fill in the table:
| Subdivision of output pollution control | Deals with | Pollutant reduction | Synergy |
b. Find correct answers to the questions:
1. What kind of scientific evidence is usually distinguished?
2. What is synergistic effect?
3. Why is the risk of lung cancer much higher for asbestos workers?
4. Is the testing of synergistic interactions of pollutants time-consuming?
5. Where is controlling of different types of pollution in progress?
6. How many types of pollution control are developed?
7. What is input pollution control?
8. What is output pollution control?
9. What is the fundamental difference between input and output pollution control?
10.How are harmful wastes usually disposed?
c. Give the definition of the following:
| · ñoncentration · biodegradable · acid · synergistic effect | · output pollution control · recycling · input pollution control · chronic effect |
d. Say whether the sentences given below are:
· True
· False
· Not given:
1. People usually have different opinion on benefits and risks to their
health caused by pollutants.
2. DDT and other chemical pesticides are slowly biodegradable pollutants.
3. Mercury and lead compounds are rapidly biodegradable.
4. The same level of pollution affects all people similarly.
5. Coal-burning electric power plants release into the atmosphere
sulfur dioxide gas.
6. Pollutants caused by human activities degrade to harmless levels
by natural processes.
7. Research is one of the most important aspects of scientific and
engineering practice.
8. Scientific research helped to define specific chemicals in cigarette smoke that cause lung cancer.
9. A water supply system may involve dams and other structures as well as the flow and storage of water.
10. Most developed countries can control pollution nowadays.
2. Analyze the details:
a. Complete the following sentences:
| 1. Polluting substances can enter the environment … 2. Two people can be affected differently … 3. Invisible chemicals ejected into the air or water from an industrial plant … 4. Output pollution control deals with … 5. Economic devices are used to make … 6. Harmful wastes are disposed … | a. by the same level of pollution. b. are harmful to humans and other forms of life. c. naturally or through human activities. d. the resource inputs of a process expensive. e. by burning or dumping in the air or water f. wastes after they have been produced |
b. Summarize the information about pollutants and fill in the table:
| Types and sources of pollutants | Biodegradability |
c. Find in the Texts and read information about:
· harm pollution brings to humans and other forms of life
· risks from polluted air and water against the benefits of employment
· acute and chronic effects of pollution on human health
· scientific evidence of harmful effect caused by a particular pollutant
· example of synergistic effect
· how people can be affected by pollution at different levels
· testing synergistic interactions
· two fundamentally different approaches to pollution control
· economic incentives for decreasing the output of waste materials.
d. Match each type with its scope :
| Effects of pollutants; Types of pollution control | Scope |
| · acute effect · output control · chronic effect · input control | a. due to exposure to low concentrations of a pollutant during a long period of time b. shortly after exposure, often in response to fairly high concentrations of a pollutant (a burn, illness, or death) c. potential pollutants are prevented from entering the environment d. wastes are managed after they have been produced |
e. Summarize the information about pollutants, their types and effects,
also the ways pollution is controlled.
Text C. GROUNDWATER POLLUTION
Text for individual work: read, translate and be ready to do the
Date: 2015-12-18; view: 1256
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