2007-07-24 13:59:00 · 3 answers · asked by Zack 4 in Science & Mathematics ➔ Biology
advantage to having two?
2007-07-24 14:00:04 · update #1
Here's an article that says having two nostrils makes us better at following scents, "scent tracking". It's pretty much the same as judging the direction from which a sound comes when we hear from two ears. http://www.berkeley.edu/news/media/releases/2006/12/18_scents.shtml
2007-07-24 14:14:20 · answer #1 · answered by ecolink 7 · 0⤊ 0⤋
We, like most animals of any size, possess the characteristic called "bilateral symmetry," Which means we are mirror image down the longitudinal center. Had you not noticed this phenomenon? How odd...
Except for the visceral organs that are singular, we have two of everything. The chief advantage seems to be functional redundancy. Poke out one eye and you can still see. Lose one testicle and you can still impregnate. And so on.
2007-07-24 21:07:16 · answer #2 · answered by aviophage 7 · 0⤊ 0⤋
to keep it simple, if one side clogs up you have a spare.
"dont you ever get colds?"
2007-07-24 21:08:10 · answer #3 · answered by Anonymous · 0⤊ 0⤋