Many countries today are experiencing problems associated with noise pollution (excessive noise above a normal background noise.) What are the causes of this phenomenon, and what effects does it have on the people affected?

Based on a line graph of fast food

consumption

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among Australian teenagers between 1975 and 2000, over a 25-year period. Overall,

consumption

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of

fish

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and

chips

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declined over the period, while pizza and hamburger

consumption

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increased. In 1975, the most popular fast food among Australian teenagers was

fish

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and

chips

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, eaten 100 times a year. That's much higher than pizza and hamburgers, which are consumed about 5 times a year.

However

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, there was an upward trend from 1980 to 1985, with

fish

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and

chips

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consumption

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gradually declining over a 25-year period, eventually reaching levels close to 40. Notably, teens ate the other two fast foods at much higher levels.

Consumption

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of pizza gradually increased until it surpassed that of

fish

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and

chips

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in 1990.

Then

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it

leveled

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levelled

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off from 1995 to 2000. The biggest growth was in hamburgers, where hamburger eating increased dramatically in the 1970s and 1980s, surpassing

fish

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and

chips

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in 1985. It's the same level as

fish

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and

chips

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to start with, 100 times a year.