the region of the left lower limb is proximal to the region of the ipsilateral limb.

Femoral region, crural

Explanation:

The femoral region of the left lower limb is proximal to the crural region of the lateral limb because the femoral region is the upper of the lower limbs and consist of femur or thigh which lies between the gluteal, abdominal, and perineal regions and it's connect the hip bone to the knee bone and it is proximal to the crural region which is leg and lies between the knee and the ankle.

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.