Answer: I don’t see them, but this one would be correct (- - means underline)
The -earth- is made of four -layers-.
Explanation:
‘The’ is an article.
‘is’ is a linking verb
‘Made’ is a verb
‘of’ is a preposition (if not it is an adverb)
‘Four’ is an adjective.
That leaves earth and layers as the nouns, and they should be underlined.
