Match List - I with List - II.

List - I		List - II
(A)	Natality	(I)	Number of individuals coming into the habitat from elsewhere
(B)	Mortality	(II)	Number of births in the population
(C)	Immigration	(III)	Number of individuals leaving the habitat
(D)	Emigration	(IV)	Number of deaths in the population

Choose the correct answer from the options given below:

• Population size keeps changing with time due to a number of factors.
• The basic factors that contribute towards the fluctuations in population density are:
  • Natality (B) 
  • - is the number of births in the given population for a given period of time.
  • Mortality (D) - is the number of deaths in the given population during a given period of time.
  • Immigration (I) - is the number of individuals of the same species that have come into the habitat from elsewhere during the time period under consideration.
  • Emigration (E) - is the number of individuals of a population leaving the habitat for another during the time period under consideration.

We can express the relation between these factors in the following equation:

N_t+1 = N_t + [ (B + I) - (D + E) ]

where, N = Population density

Corrected Table:

Hence, the correct answer is option 1.