1. Colors make up our world.

2. Our world is made up by colors.
3. Our world is made up of colors.

(What is the passive form of the active form #1? Is it #2 or #3? Are both grammatical?)

4. Is two-word verb composed of a verb and an adverb? What about a verb and a preposition? Can it be also called a two-word verb?)

2 answers

coulours make up our world
Passive would be - Our world is made of colors.

#3 would be the grammatical sentence.