Hello. You didn't talk about what text this question refers to. This does not allow me to answer your question exactly, but I can help you by showing you the concept of noun clauses, as well as examples that will help you find the clauses you need in your text.
A noun clause is a dependent sentence within a sentence that acts as a noun, most of the time, however, this type of clause can assume the role of other grammatical classes as a subject, a direct and indirect object, within others. It is important to note that a noun is the grammatical class that has the ability to name any element, in this case, the noun clause must also be able to name something.
Examples of this type of clause can be:
"Whatever you say is not in my interest" where "Whatever you say" is naming something and representing the noun clause.
"I know that it happened", where "that it happened" is also naming something.
