To keep them from drying out, and to keep foreign matter from entering and irritating our eyes.
You have to blink when your supposed to blink and when you blink it happens in a jiffy. A jiffy is 1 out of a hundred of a second.
Blink a few times
No, no fish can blink because they have no eyelids. We blink to regain moisture in our eyes and wash away dirt, but they are surrounded by moisture and water, so there is no need to blink. However, the are a few that have a nictitating membrane (also called the third eyelid) that they "blink". This "third eyelid" is used to protect the eyes.
Yes, Tasmanian devils can blink their eyes.
The future tense of "blink" is "will blink." For example, "I will blink my eyes."
You have to blink or else your eyes will dry out.
your eyelashes protect your eyes from dust particles. when you blink it's mainly to lubricate your eyes. to add moisture back into your eyes if you didn't blink then your eyes would be very dry.
when you blink your brain is saying you eyes are dry and something like that
When your eyes get dry or irritatted.
because you are cleaning your eyes and pathogens are all over and they enter you eyes. when they enter your eyes you n.eed to clean them, so you blink
you must blink your eyes so water in your eye will come and keep the eye from drying
Even though sharks are among very few fish which have eyelids, they do not blink. Most species of sharks have special nictitating membranes which go over their eyes to protect them when they are hunting or under attack.