Im going for problem and solution but i get a feeling its cause and effect more. Hope you get it right!
Answer:
he didn't try to stop the negative stuff
Explanation:
he cut trees and made something called "Thneed"
which polluted the air and the mayor of Thneedville had to sell fresh air for money.
A PARTICIPLE is a word created from a verb that has the function of an adjective and it adds a description or qualities of the antecedent. There are two types of participle, present (as in the sentence above; base verb+-ing) or past participle (base verb+ -ed –for regular verbs- and Irregular past participles verbs- for example “Known)