The death rate of turtles during the year is option A, i.e., 7.
<h3>What is death rate?</h3>
The mortality rate, also known as the death rate, is a measure of the number of deaths (in general or due to a specific cause) in a given population, scaled to the population's size, per unit of time.
The complete question is:
During one year, eight turtles are born into a population. Ten turtles immigrate into the population, but two emigrate to find mates. If the overall population growth is nine turtles, what was the death rate of turtles during the year? Use this formula: population growth = (birth rate + immigration) – (death rate + emigration)
Given,
Birth rate = 8 turtles / year
Immigration = 10 turtles / year
Emigration = 2 turtles
Population growth = 9 turtles.
Let that the death rate for the given population is X.
One know that,
population growth = (birth rate + immigration) – (death rate + emigration)
9 = (8 + 10) - (X + 2)
9= 18 -( X+ 2)
X= 7
Thus, he death rate of turtles during the year is option A, i.e., 7.
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