Question

In your own words, explain the purpose and impact an adjective clause has on a reader.

Answer 1

An adjective clause is a group of words with a subject and a verb which provides a description.
An adjective clause gives more information about a noun or a pronoun by answering the question which, what or who. The details given by the adjective clause usually impact the overall meaning of the text. 

Answer 2

An adjective clause is a dependent clause that like an adjective, changes a noun or pronoun.