<u>(</u><em>Just</em><em> </em><em>so</em><em> </em><em>yknow</em><em> </em><em>this</em><em> </em><em>depends</em><em> </em><em>cos</em><em> </em><em>some </em><em>ppl</em><em> may have a varying number of ribs</em><em>,</em><em> </em><em>vertebrae</em><em> </em><em>and</em><em> </em><em>stuff</em><em>)</em><em> </em><em>but</em><em> </em><em>ye</em><em> </em><em>usually</em><em> </em><em>it's</em><em> </em><em>206</em><em> </em>
I’m pretty sure the answer is A because carbon dioxide causes a solution to turn yellow and a solution that indicates no carbon dioxide would be blue instead of green.
C) Is the correct answer I believe, unless you want to flush the chemicals down the sink and then have a reaction with them the next time you go swimming in a lake and find them there.
