Why do bases make good household cleaners?
a. they are not irritants
c. they have low ph's
b. they are not corrosive
d. they react with oils and fats

acid rain does not usually kill trees directly. instead, it is more likely to weaken the trees by damaging their leaves, limiting the nutrients available to them, or poisoning them with toxic substances slowly released from the soil. the main atmospheric pollutants that affect trees are nitrates and sulphates.