Apopulation of snakes that eat small rodents enters a new habitat. in the new habitat, there are many species of rodents, and their populations are high because there are few natural predators. what will most likely be the effect on the genetic variation of the snake population?
genetic variation will increase because of a selective pressure.
genetic variation will increase because of a new habitat and food source.
genetic variation will decrease because of a selective pressure.
genetic variation will decrease because of a new habitat and food source.

Option B, Genetic variation will increase because of a new habitat and food source.

Explanation:

There are three positive scenarios about the new environment in which the snakes have entered -  

a) There are different varieties of rodent

b) The population of rodent is high due to less number of predators.  

c) Low population of predators other than the snakes (Limited competition)

Hence, snakes will have ample supply of food in the new sphere as there is very low competition among the predators (due to low population of other predators) and also there are varieties of rodent. Due to ample supply of food and limited competition with other predators , snake population will increase and thus the genetic variation will also increase due to increased rate of breeding.

Thus, option B is correct.

americans began to notice growing differences between the northern and southern sections of the country. there were more people living in cities in the north, which made it more urban. more people lived on farms in the south, which made it more rural. while many people were farmers in the northern states, there were now other ways to make a living, such as working in mechanical cotton gins factories manufacturing cloth, tools and other goods. people in the north supported high tariffs on goods imported from europe because the extra cost encouraged people to “buy american” instead. in the southern states, planters did not like tariffs because they sold most of their production to europe and bought their tools from there as well. southerners believed the protective tariff was something that only northern factory owners keep their profits high. so the southern politicians came up with an idea. they would opt out. they would simply ignore the protective tariff. it was ‘null and void’ in south carolina. the state would not collect the taxes on goods imported into south carolina, no matter what the president said they had to do. this decision led to the nullification crisis.

answer: i don't know

explanation:

you need to provide a picture, otherwise i can't tell you.

if you can provide one, i'd be more than happy to you with this!