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Q.

Identify which of the following statements are TRUE in case of population growth.
i. Mortality and immigration cause a decrease in the population of a species. 
ii. Natality and emigration cause an increase in the population of a species.
iii. Population density will increase if (B+ I) is more than (D+E).
iv. Size of a population for any species is not a static parameter.

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a

iii and iv

b

i and ii

c

ii and iv 

d

i and iii

answer is D.

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Detailed Solution

Mortality and emigration cause a decrease in the population of a species. 
Natality and immigration cause an increase in the population of a species.

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