What needs to be capitalized
The largest volcano in the Solar system, Olympus mons on mars, measures 374
miles across. By comparison, the largest volcano on our Planet is Mauna Loa in
hawaii; it measures just seventy-five miles across.
Capitalization Corrections:
1. "The" should be capitalized to start the sentence: "The largest volcano..."
2. "Solar system" should be capitalized: "The largest volcano in the Solar System..."
3. "Olympus mons" should have "O" and "m" capitalized: "Olympus Mons"
4. "Mars" should be capitalized: "Olympus Mons on Mars"
5. "Mauna Loa" should have "M" and "L" capitalized: "Mauna Loa"
6. "Hawaii" should be capitalized: "Mauna Loa in Hawaii"
Corrected sentence: "The largest volcano in the Solar System, Olympus Mons on Mars, measures 374 miles across. By comparison, the largest volcano on our planet is Mauna Loa in Hawaii; it measures just seventy-five miles across."