Answer:
Prepositions:
3. The Legendary pony express rode its way into american history
4. The rider's trail began at St. Joseph, Missouri.
5. A weary rider would often reach california in 10 days
Conjunctions:
6. Earth rotates on its axis and revolves around the sun
7. Neptune is an ocean blue color so it named for the god of the sea.
Explanation:
Prepositions:
3. into: it indicates a movement in a certain direction (into American History).
4. at: it indicates a location ( at St. Joseph, Missouri).
5. in: it indicates a period of time which is necessary for a goal to be achieved (in 10 days).
Conjunctions:
6. and: it expresses addition (and revolves around the sun).
7. so: it expresses a conclusion (so it named for the god of the sea*).
*"it was named after the god of the sea", perhaps?
