Natality
Chapter 10: CHAPTER 10 · BIO ZOOLOGY · EN medium
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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
📖 Class 12 Bio Zoology English 2024 Edition www.tntextbooks.in · Page 182
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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
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