2006-10-11 13:09:26 · 21 answers · asked by Matthew B 1 in Science & Mathematics ➔ Biology
Binocular vision and stereo sound. Two eyes let us judge distance and depth. Two ears allow us to pinpoint where a certain sound is coming from.
2006-10-11 13:12:06 · answer #1 · answered by Shaun 4 · 0⤊ 0⤋
For 'positional' purposes. Two eyes allow depth and length perception more easily as the brain has two points of reference.
It's the same with ears. Two ears allow us to locate the approximate area from which a sound emanates far more effectively than one.
2006-10-11 20:13:13 · answer #2 · answered by Phish 5 · 0⤊ 0⤋
Eyes to ensure that we have 20/20 vision and 2 ears for balance
2006-10-11 20:13:21 · answer #3 · answered by ojay 2 · 0⤊ 0⤋
It is a back up in case we lose the sight/hearing in one eye/ear.
2006-10-11 20:12:45 · answer #4 · answered by Anonymous · 0⤊ 0⤋
Shaun's right,
Also:
Our eyes face front: they're predators eyes
Look at rabbits eyes at the sides virtually 360* visibility to check for predators-they are prey animals.
M
2006-10-11 20:16:00 · answer #5 · answered by mesmerized 5 · 0⤊ 0⤋
All these answers and only Steve's answer answers the question. This bilateral symmetry is the body plan that natural selection set on. Not in entirety, but rather generally.
2006-10-11 21:11:28 · answer #6 · answered by Anonymous · 1⤊ 0⤋
One thing that wasn't mentioned was that most primates have their eyes on the front of their head which allows to perceive depth.
2006-10-11 20:23:21 · answer #7 · answered by scienceguy888 2 · 0⤊ 0⤋
Equilibrium man.
2006-10-11 20:13:50 · answer #8 · answered by Jo 2 · 0⤊ 0⤋
It's called bilateral symmetry, a feature of life that evolution has favored in many species.
2006-10-11 20:12:52 · answer #9 · answered by Steve 7 · 3⤊ 1⤋
because two of each are better than one or because three would just look silly lol
2006-10-11 20:30:16 · answer #10 · answered by NetNet 2 · 0⤊ 0⤋