A: Hey B. Have you finished the assignment on pollution yet?
B: Mm, not yet! I am working on it. How's about you?
A: Me too. What have you studied on so far?
B: I have collected the information about the definition and types of pollution.
A: Cool. Can you tell me?
B: Oh, well, pollution is the introduction of contaminants into the natural environment that cause adverse change. There are four main types of pollution: air pollution; water pollution; soil pollution, and noise pollution.
A. I heard that there is visual pollution also. Have you studied on it?
B: No, I haven't. Can you tell me something about it?
A: It is an aesthetic issue and refers to the impacts of pollution that impair one's ability to enjoy a vista or view. Visual pollution disturbs the visual areas of people by creating harmful changes in the natural environment.
B: Oh, so billboards, attenas can cause visual pollution, can't they?
A: True. They are causes of visual pollution.
B: Have you written about effects of pollution?
A: Yes, I have. I have described its effects on human health, environment.
B: Oh. I am planning to work on pollution control by government.
A: It would be better if we worked together.
B: True. How about learning together?
A: That's a good idea!
