Answer:
The Grand Canyon is considered one of the natural wonders of the world. In the above sentence, the word 'natural' is the adjective.
Step-by-step explanation:
The adjective is the parts of speech which tell something about the noun or the pronoun in a sentence. An adjective tells about the quality, quantity, and state of the noun or the pronoun. In the above sentence, the word 'natural' tells about the type of 'wonders of the world' which is a noun.