3. Dry Ice changes to carbon dioxide at room temperature.
You see, sublimation is the transfer of solid to gas without a liquid in the process.
The sentence which uses correct punctuation is C. In time, of course, all issues get resolved, but not necessarily in the way you would like.
In A, the comma before <em>he was concerned </em>should be a dash. In B, there should be a colon before <em>a flashlight, </em>not a semi colon. In D, there should be a comma before <em>yet, </em>and not a colon.
James is smarter than Steven. Since smarter is already used to show that James has a higher mental ability than Steven, there is no need for "more"
The sixth grade lexile is 665L to 1000L hope this helps
