We know that positive integers are greater than negative integers.
So, 6 and 0 are greater than -2, -3 and -5.
Since, we know that higher the magnitude of the negative integer smaller the value of the integer.
So, -5 is the smallest among -2, -3 or -5.
∴ The ascending order is as follows:
-5 < -3 < -2 < 0 < 6