The overall population of a species has increased. What could have occurred to allow this to happen? The emigration rate is greater than the death rate.
The death rate of the population is greater than the immigration.
The birth rate of the population is less than the death rate.
The immigration of the population is greater than the emigration.

The correct answer is - The immigration of the population is greater than the emigration.

Explanation:

The growth of the overall population depends on the birth rate, immigration, emigration and death rate. The growth of the population can be calculated by subtracting the number of individuals removed or exited the population from the number of individual come into the population.

Among the given options the best choice is the number of immigration is higher than the number of individual emigrated from the population that means the population growth is increased.

this is true, assuming that the allele is completely recessive and incomplete dominance is not a factor.

the correct answer is option d.

an appositive is a noun, noun phrase or noun clause which follows another noun or noun phrase in order to describe it or name it another way. they are usually used between commas, brackets or dashes.

the example sentence with the correct use of commas is the following:

her uncle, the man over there in the red shirt, owns the hardware store in town.