How has our relationship with milk changed pollution in the last 200 year

The factories are mainly responsible for producing pollution.

Explanation:

The changing technology has caused a severe impact on the environment. The increase in advancement of technology is a cause for the development of factories.

The factories used methods which produces pollution. The use of harmful gases in milk production factories is a major cause of pollution. Thus our relationship with milk changed pollution in the last 200 year.

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answer: collecting information/data

reason: the student is going around and asking people questions to collect data

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