A population of rodents contained 703 individuals at the end of March. During th

Question

A population of rodents contained 703 individuals at the end of March. During the month of April, 47 died, 17 were born, 57 immigrated, and 16 emigrated. What was the population size after those events? Is the population growing or shrinking? By what population rate? A population of rodents contained 703 individuals at the end of March. During the month of April, 47 died, 17 were born, 57 immigrated, and 16 emigrated. What was the population size after those events? Is the population growing or shrinking? By what population rate?

Explanation / Answer

Answer) We have an initial population size (N) = 703 individuals

the number of total births (b) = 17 and deaths (d) = 47

the number of total emigration (e) = 16 and the immigration (i) = 57

so, the new population size will be calculated as N' = N + (b+i) - (d+e)

= 703 + (17+57) - (47+16) = 703+11 = 714

yes, this population is growing.

now, the population growth rate will be = N' - N / N x 100 per unit time

= 714-703/703 x 100 per month

= 11/703 x 100 per month

= 1.56 % per month.

hence, the population growth rate for the given rodent population is 1.56% per month.

Related Questions

Navigate

• Browse (All)
• Browse A
• Subjects

---

---

Integrity-first tutoring: explanations and feedback only — we do not complete graded work. Learn more.