List the important characteristics of a population Explain?
A population has the following four major characteristics: (i) Population Density- The size of a population defined with respect to a definite unit of space is known as population density. The maximum limit of density depends upon energy flow in an ecosystem, nutritional status of trophic level & metabolic equilibrium. Population density can be mathematically calculated as: (ii) Birth Rate / Natality- The birth rate or natality denotes the produced new number of individuals produced by a natural method in per unit time. (iii) Death Rate / Mortality- It denotes the death rate of individuals in the population. It is expressed as the number of individuals dying in a given period. (iv) Carrying Capacity- A finite number of organisms can accommodate in a certain space of a particular habitat or ecosystem depending on its size & productivity. This is called carrying capacity