Take a close look at both the definitions and uses of commas, colons, and semicolons. Commas set off clear parts of sentences, colons come before an explanation, and semicolons join two complete thoughts. Review these types of...

What common chemical includes safety warnings for being harmful if swallowed or inhaled, causes serious eye damage, and needs to be cleaned up immediately if spilled on the floor? Surprisingly, the dangerous chemical turns out to be...