Question

Which of the following correctly tells about population density at time t+1?

• A. Nt + 1 = Nt + [(B + I) – (I + E)]
• B. Nt + 1 = Nt + [(B + I) – (D + E)]
• C. Nt + 1 = Nt + [(B + D) – (B + E)]
• D. Nt + 1 = -Nt + [(B + I) – (D + E)]

Answer 1

Answer:

B. Nt + 1 = Nt + [(B + I) – (D + E)]

• The population density at time t+1 is given as Nt + 1 = Nt + [(B + I) – (D + E)].

• Here Nt is population at time t, B is natality, I is immigration, D is mortality while E is emigration.