The atmospere doesnt contain enough oxygen and the temperature is way to cold
2. the inability to adapt to its environment. if a bird lives in a tree and itgets cut down it has to find a new tree. it has to adapt..find a new habitat. if it can't do that, it has no shelter and dies
The limiting factor is in the environment rather than the age, since the bats growth is only limited by the fruit trees they feed on. This follows the concept of carrying capacity of an environment, so this is best modelled by logistic growth.
so the answer is logistic growth