How can cells make proteins if the dna cannot leave the nucleus

DNA is made of sequence of bases. Such sequence is also called as 'genome sequence'. For any particular protein, the genome sequence undergoes transcription. Transcription is copying of genome sequence in the form of messenger RNA (mRNA). Such mRNA is translated to amino acid sequence by ribosome. Then this amino acid sequence is modified to form a specific protein. This process is very sensitive to change in bases. If the base in a genome sequence is changed then, there are very less chances of making the similar protein. If the changed base is making any specific bonds then similar protein cannot be made.  

Explanation:

answer: decrease

a limiting factor is the one which decrease the abundance, distribution and causes extinction of the population of species in a ecosystem. here, predators including hawks, owls and snakes are the limiting factor for the population of mexican free tailed bat.   although bats are nocturnal animals as they forge for food at night these predators also may remain active during night which can decrease the population of the mexican free-tailed bats. also, these bats eat only one type of insects that are moths. the food can also be a limiting factor as all 400 members are dependent upon same type of food needs that are moths. the decrease in the moth population can cause decrease in population size of the mexican free-tailed bats.

therefore, the scenarios will most likely to decrease the population size of the mexican free-tailed bats.  

anthropod traits:

a well-developed collarbone

rotating shoulder joints

partially rotating elbow joints

opposable thumb

similar dental formula