There are more people who are born then die.
Population is affected by birth rate, death rate and migration.
Birth Rate: 19.77 births/1,000 population (2008 est.)Death Rate: 6.16 deaths/1,000 population (2008 est.)
birth rate is 10 people per second
The global GDP growth rate in real terms for 2008 is 3.2%. See related link for detailed breakdown.
Infant mortality rate decreasing due to improved medical care. Death rate decreasing due to higher living conditions and medical care. High birth rate in LEDCs (Less Economically Developed Countries) due to large sized family traditions and culture
the birth rate is the rate of birth in a population, the death rate is the number of deaths in a population and the growth rate is the growing numbers of the population.
birth rate - death rate = growth rate
death rate is subtracted from birth rate.
-If the death rate is greater than the birth rate, the growth rate decreases -If the birth rate is greater than the death rate, the growth rate increases -If there are good resources like medicine, good food suply and water, the death rate will decrease.
Zero growth
Birth Rate - Death Rate = Alive people Alive people to Last years Alive people = rate
Population growth its that simple
The r value in the exponential equation is the rate of natural increase expressed as a percentage (birth rate - death rate). So the math includes the birth rate and the death rate when implementing the equation. Students may have a hard time understanding that population growth is controlled not only by birth and death rates but also by the present population. The mathematics of exponential growth govern the prediction of population growth. Your welcome Ms. Musselma...'s class.
Birth Rate - Death Rate = Alive people Alive people to Last years Alive people = rate
birth rate is higher than death rate
death rate birth rate
A negative population growth exists