You discover a new species of bacteria that grows in aquatic environments with high salt levels. while studying these bacteria, you note that their internal environment is similar to the salt concentrations in their surroundings. you also discover that the internal salt concentrations of the bacteria change as the salt concentration in their environment changes. the new species can tolerate small changes in this way but dies from large changes because it has no mechanism for altering its own internal salt levels. what type of homeostatic mechanism is this species using to regulate its internal salt levels?

The type of homeostatic mechanism that this species is using to regulate its internal salt levels is  conformation.

Explanation:

A conformation homeostasis can be described as a type of homeostasis which occurs in the bodies of an organism which live in an environment for a long period of time. In this way, organisms do not have to make much effort to maintain homeostasis in that kind of  environment.

For example, the bacterial which lived in high salt conditions changed its internal conditions according the environment.

it creates acid rain

if the type of the food available changes, then the frequency of beak types will change, because birds with beaks more suited to the available food will be more successful over time.