Question

What is the sequence of events that forms acid rain?

Water, oxygen and other chemicals mix with certain compounds; the compounds are released into the atmosphere; they become acid rain.
Water evaporates from a polluted lake; the polluted water mixes with existing water; it becomes acid rain.
Certain compounds are released into the environment; they become acid rain; the acid rain evaporates into the atmosphere.
Certain compounds are released into the atmosphere; they mix with water, oxygen, and other chemicals; they form acid rain.

Answer 1

Answer & Explanation

vACID RAIN forms when clean rain comes into contact with pollutants in the air, like SULFUR DIOXIDE (SO2), CARBON DIOXIDE (CO2), and NITROGEN OXIDES (NOX). Although sulfur dioxide and carbon dioxide occur in the air natu- rally, burning fossil fuels adds more of these chemicals to the air.

Answer 2

It seems more appropriate.

Certain compounds are released into the atmosphere; they mix with water, oxygen, and other chemicals; they form acid rain.

Step-by-step explanation:

Certain compounds which are gases like Oxides of Carbon Nitrogen and Sulphur are released into atmosphere and they go upward as they are lighter in weight.

During rain water mixes with these chemicals and form acid rain.