is tear water same as spit?

The actual difference deals with the function of these fluids, sweat being an elimination of body materials — minerals and ions — in an effort to coat the skin with a fluid that makes you cool when the wind blows over, whereas tears are primarily there to keep your cornea from drying out. While both contain a certain amount of salt, there's mucus in tears. And that mucus is there to keep the cornea lubricated

Thank your doctor later
 
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The actual difference deals with the function of these fluids, sweat being an elimination of body materials — minerals and ions — in an effort to coat the skin with a fluid that makes you cool when the wind blows over, whereas tears are primarily there to keep your cornea from drying out. While both contain a certain amount of salt, there's mucus in tears. And that mucus is there to keep the cornea lubricated

Thank your doctor later
tears are good to roll joint
 

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