Question

define acid rain....​

Answer 1

$\huge\mathfrak\red{Heya\:..!}$

Some of these gases (especially nitrogen oxides and sulphur dioxide) react with the tiny droplets of water in clouds to form sulphuric and nitric acids. The rain from these clouds then falls as very weak acid - which is why it is known as "acid rain".

Answer 2

acid rain is caused due to the harmful gases dissolving in the air by burning the fossils for eg: coal, petroleum

It is dangerous as acid rain damages the fertility of the soil..