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# For a newly colourised habitat,which factors affects the population density the most :

$\begin{array}{1 1}(a)\;\text{Emmigration}\\(b)\;\text{Immigration}\\(c)\;\text{Natality}\\(d)\;\text{Mortality}\end{array}$

For a newly colourised habitat,which factors affects the population density the most immigration
Hence (b) is the correct answer.