Natality

Natality Populations increase because of natality. Natality is equivalent to birth rate and is an expression of the production of new individuals in the population by birth, hatching, germination (or) fission. The two main aspects of reproduction, namely fertility and fecundity play a significant role in a population. Natality rate may be expressed in crude birth rate number of organisms born per female per unit time. Birth rate (b) = number of birth per unit time average population XII Std Biology-Zoology Chapter- XII Std Biology-Zoology Chapter- Organisms and Populations