A) \[{{\operatorname{N}}_{t+1}}={{N}_{t}}\left( B+I \right)-\left( D+E \right)\]
B) \[{{\operatorname{N}}_{t+1}}={{N}_{t}}+\left( B-D \right)-\left( I+E \right)\]
C) \[{{\operatorname{N}}_{t+1}}={{N}_{t}}+\left( B-E \right)+\left( I+D \right)\]
D) \[{{\operatorname{N}}_{t+1}}={{N}_{t}}\left( B+I \right)-\left( I-D \right)\]
Correct Answer: A
Solution :
| Here N is the population density |
| \[{{\operatorname{N}}_{t}}\] = Population density at time t |
| \[{{\operatorname{N}}_{t}}\] = Population density after time (t + 1) |
| B = Natality |
| I = Immigration |
| D= Mortality |
| E = Emigration |
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