$7a^{2}b$ and $-7a{b}^2$ are like terms.

The degree of the expression $-4x^{2}yz$ is $-4$.

Any integer can be the degree of the expression.

Find the degree of $5x^2$.

Find the degree of $-7ab$.

Find the degree of $12p{q}^2{r}^2$.

Find the degree of $-125$.

Find the degree of $3z$.

Find the degree of $x^3-1$.