Define population density.What are consequences of high population density?

What is population density?

(a) What is population density ?

Density of population D is

The population density can be measured in

Following table summarises the differences between natality and mortality. Select the incorrect ones. {:("Natality","Mortality"),((i)"Natality is number of births per unit population per unit time.","It is number of deaths per unit population per unit time."),((ii)"It adds new individuals to the population.","It removes individuals from the population"),((iii)"It increase the size of population.","It decreases the size of population"),((iv)"It increase population density.","It reduces population density."),((v)"It is low when population size is small and high when population size is large.","It is high when population size is small and low when population size is large."):}

Which factor controls the population density ?

List the different attributes that a population has and not an individual organism. ( b) What is population density? Explain any three different ways the population density can be measured ,with the help of an example each .