Which factor would not influence a population size in a desert?

a. typical changes in temperature

b. increased availability of mates

c. newly introduced species

d. rare fungal disease

Typical changes in temperature would not influence a population size in a desert. The correct option among all the options that are given in the question is the first option or option "a". The changes in temperature will never effect the population of a desert very severely. Other options given in the question will definitely have an impact on the population.