Why is the changeable nature of models considered a limitation?

The changeable nature of models is considered a limitation because this makes it impossible to use the same model in all situations. Usually, models operate within a set of specific conditions. As long as these conditions remain the same, the model can be trusted. However, if the conditions change, the model might not be as useful anymore, and a new model would have to be developed.

i think the answer is

mass

tsd is temerature dependent sex determination.

tsd: it is a type of environmental sex determination in which the temperature experienced during embryonic/ larval development (ambient temperature for development) determine the sex of the offspring.

crocodile displays the tsd where the ambient temperature of the developing egg determines the individual's sex. for example in the american alligator's eggs, incubation at 33 ºc produces mostly males, while incubation at 30 ºc produces mostly females. so if the american alligator's egg will get the ambient temperature (33 degree celcius)during embryonic development from egg, the offspring will be male and same for the female sex determination.