Answer these questions if ! (biology) 100 only answer if u know the ! 1. what indicates that evolution is taking place in a population? use the word alleles in your "answer". 2. what are three sources of genetic variation? 3. how does the range of phenotypes for single-gene traits differ from the range for polygenic traits?

1 - The change in gene pool (change in alleles) which means that the individuals are changing and devolping new characteristics along with new species.

2 - Sex, mutation and gene flow are the three sources of genetic variation.

3 - Single-gene traits can only have 2 different phenotypes while polygenic traits can have many phenotypes.

Hope it helped,

BioTeacher101

the supermassive black hole is in the middle of the galaxy.

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.