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Identify the environment-related disorder and its accurate primary cause from the options provided:

Option: 1

Black lung disease (pneumoconiosis) primarily affects workers in stone quarries and crushers


Option: 2

Blue baby disease (methemoglobinemia) is caused by extensive usage of nitrogenous fertilizers in the region


Option: 3

Non-Hodgkin's lymphoma is predominantly found in workers engaged in the production of neem-based pesticides


Option: 4

Skin cancer mainly occurs in individuals exposed to benzene and methane.


Answers (1)

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Blue baby disease, also known as methemoglobinemia, is an environment-related disorder that occurs when there is an excessive amount of methemoglobin in the blood. Methemoglobin is a form of hemoglobin that cannot effectively carry oxygen to body tissues. The primary cause of blue baby disease is the heavy use of nitrogenous fertilizers in the area. Nitrogenous fertilizers contain nitrates and when consumed through contaminated water or food they can be converted to nitrites in the body. Nitrites can lead to the formation of methemoglobin, reducing the oxygen-carrying capacity of the blood and resulting in a bluish discoloration of the skin, hence the term "blue baby disease."Hence, the correct answer is option 2. 

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