i would like to know why us humans have to blink?

because of microscopic dust trying to get in..and we constantly blink?..then why do some animals dont blink...like for example..a bunny rabbit...does not blink..but closes its eyes to sleep...im just real curious about this.

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Answers:
some creatures like rabbits have a thin membrane that keeps dust from irratating the eye they close their eye lids to sleep to block out light as do we. we do not have this membrane so to keep the dust washed away we blink which squeezes our tear ducts and washes the eye clean.

Have you ever experience seeing million of tiny dots in your vision in the dark?

some animals have a clear inner eye layer to keep moisture and the eye from getting external particlas in it-

your curiosty is a good thing

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WII BLNK CUZ IF WII DNT THN ARE EYEZESSESSS WOOLD LYK TOTTLY DRY OOT!!!

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i would like to know why us humans have to blink?

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