<p>i've noticed that possessive pronouns ("it's") are rarely ambiguous but their non-possessive counterparts ("it") are usually ambiguous when used in a similar situation. why is this?</p>
<p>The possessive pronoun is "its," without the apostrophe. "It's" is a contraction for "it is." </p>
<p>Could you give specific examples?</p>
<p>just remember that the apostrophe makes it a contraction, like all other contractions.......</p>