Ieteicams Interesanti Raksti


4.1.2. Cilvēku populācijas pieauguma temps — bioloģija

Demographic TransitionRecall from the Populations chapter that the population growth rate (r) equals the birth rate minus the death rate. Slowly declining birth rates following an earlier sharp decline in death rates are today characteristic of most of the less-developed regions of the world. The shift from high birth and death rates to low birth as well as death rates is called the demographic transition.
Lasīt Vairāk