Visible characteristics of snake

The jaws of snakes are loosely jointed and extremely flexible. There are no ears or movable eyelids; the eyes are covered by transparent spectacles, or ocular scales.

Explanation:

Snakes have good vision.There are no ears or movable eyelids; the eyes are covered by transparent spectacles, or ocular scales.

dna is made up of six smaller molecules -- a five carbon sugar called deoxyribose, a phosphate molecule and four different nitrogenous bases (adenine, thymine, cytosine and guanine).