EVERYDAY SCIENCE

Detailed explanation-1: -A population is a subgroup of individuals within the same species that are living and breeding within a geographic area. The number of individuals living within that specific location determines the population density, or the number of individuals divided by the size of the area.

Detailed explanation-2: -Population density is the number of people per unit of area, usually transcribed as “per square kilometer” or square mile, and which may include or exclude, for example, areas of water or glaciers. Commonly this is calculated for a county, city, country, another territory or the entire world.

Detailed explanation-3: -The three methods for calculating population density are arithmetic, physiological and agricultural. The method used to calculate population density reveals different information about the pressure the population exerts on the land.

Detailed explanation-4: -Population density is the average number of individuals in a population per unit of area or volume. For example, a population of 100 insects that live in an area of 100 squar e meter s has a density of 1 insect per square meter.

Detailed explanation-5: -What is a population? In everyday life, we often think about population as the number of people who live in a particular place-New York City has a population of 8.6 million.