Re: how does acid rain affect the growth of plants

It is not clear from your question whether you want to know what the effect of 
acid rain on the growth of plants is or what is the mechanism by which acid rain 
affects the growth of plants.

Acid rain changes the pH of the soil and water in which the plants grow. It 
lowers the pH and makes the soil or water more acid. For reasons which are a bit 
too complicated to explain in this forum, many plants do not do well in an acid 
soil. Consequently, they do not thrive and may die.

On the other hand, some plants thrive in acid soil. These plants may not be 
affected (that is, the acid rain may have no effect) unless the acid rain is so 
severe and persistent that the pH is lowered below even the tolerance of 
acid-loving plants.

If you want to know more about acid rain and its effects on plants you may 
consult numerous books and articles available in your libraries or you may 
search the Internet on the topic "acid rain and plants".