Question

Mention any two reasons for pollution in calcutta in the 19th century

Answer 1

I think the main 2 reasons were...
the first is due to industrialisation .because of that many harmful gases are burnt.
and due to the deforestation ....etc...not only that but also due to the more commercial production of wood .and more.especially due to the factories ,large industries.

Answer 2

Explanation:

$<p style ="Color:cyan; font-family: cursive; background:black;font size25px;">(i) Wide ball was applied.$

$<p style ="Color:cyan; font-family: cursive; background:black;font size25px;"> (ii) Protective equipment like pads and gloves become available .$