Final answer:
As the value of m decreases, the value of m^-10 increases if m is greater than one, but decreases if m is between zero and one.
Step-by-step explanation:
The expression m^{-10} is a negative exponent which means it is the reciprocal of m raised to the 10th power. If the value of m decreases while m is positive and greater than one, the overall value of m^{-10} increases. However, if m is between zero and one, a decrease in the value of m would cause the value of m^{-10} to decrease. This is because taking a smaller fraction to a higher negative power results in a larger number, but only when that fraction is above one; below one, the number gets smaller.