When are lung transplants performed?

In this question I will explain when to do a lung transplant.

Explanation:

Lung transplants are usually performed when the lungs are damaged or unhealthy, this can make it difficult for the body to get the oxygen it needs to survive. Lung damage can be treated with medications or with special breathing devices. but when these measures no longer work, the transplant must be performed.

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.