Question

select the three prepositional phrases. scientists have created a 3 - d map of earth that is measured in micrometers and can be seen only with a microscope.

Explanation:

A prepositional phrase starts with a preposition and ends with a noun or pronoun. In the given sentence, "of Earth", "in micrometers", and "with a microscope" are prepositional phrases as "of", "in", and "with" are prepositions followed by nouns.

Answer:

of Earth, in micrometers, with a microscope