During a summer with lots of rain, the vegetation grew lush and the white-footed mouse populations increased due to increases in food availability. however, the next two summers were record drought years and food became increasingly scarce. over these two years, the population size of the mice decreased due to increased competition for access to food. this increased competition is an example of:

A density-dependent factor

Explanation:

A density-dependent factor is a factor that affects the density of a population and it varies according to the density of the population. The density of the dependent factor population depends on the availability of food, water, disease, migration and many more things that is related to the environmental factors but the main factor that affects the density of population is the availability of food. If the population of rabbit decrease due to the availability of flood, drought, and from other factor and have to migrate from one place to another place or start to die. If the rabbit population starts to reduce then the fox population also effects and these also start to migrate or die. So the life cycle effect all the population on earth.

the best and most correct answer among the choices provided by the question is the second choice "less supportive to the war of 1812"

the war of 1812 was a military conflict that lasted from june 1812 to february 1815, fought between the united states of america and the united kingdom, its north american colonies, and its native american allies.

i hope my answer has come to your . god bless and have a nice day ahead!