Blinking, just like humans.
so they don't dry out or get dehitraited
Moist skin helps in respiration. A think film of water is formed on the surface of frog, into which the atmospheric O2 gets dissolved and ultimately diffuses into the blood vessels underlying the skin. This is the reason, the skin of frog is richly vascular.
To survive, frogs need to be moist, otherwise their skin dries out, and the moisture leaks out thru the skin. living near a pond makes it easy for a frog to be moist, and easier to survive.
so they don't dry out or get dehitraited
Moist skin helps in respiration. A thin film of water is formed on the surface of the frog, into which the atmospheric oxygen gets dissolved and ultimately diffuses into the blood vessels underlying the skin. This is the reason, the skin of frog is richly vascular. Some amphibian species don't even have lungs but obtain all their oxygen this way. Frogs do have lung, though, but they still need to breathe through their skin as well.
A frog can breath through its skin.
so they don't dry out or get dehitraited
Absorb some oxygen when moist.
The slime on the frog's skin is mucus. It is necessary for the frog's skin to be moise because the frog breathes and drinks through the skin. If it were to dry out, it would suffocate. The mucus secreted by the frog's skin helps keep it moist.
Frogs protect themselves from too much cold or too much heat by their moist skin.
one word that they are covered with-mucus
The outer part of a frog is comprised of the skin, which protect the frog and helps keep it moist.
Its a cold blood animal.