Question

Why do knife have sharp teeth?​

Answer 1

Answer:

To cut everything you know about gravity

Answer 2

Explanation:

The stated use of (most) serrations is to cut cloth, rope and other fibrous materials more easily by “puncturing' the material. When sharp, they do their job adequately, when dulled, they tend to tear more than cut. ... Also, to me, partially serrated knives are less than useless.