Consider the following statements: Demographic transition is a general model1. Describing the evolution of levels of fertility and mortality.2. Which has been developed with particular reference to developed countries.3. Which has been accepted as the universal model of population growth.4. Which suggests for highly stylised phases in process. Which of the above statements are correct?

The world population is the total number of humans currently living. It was estimated by the United Nations to have exceeded eight billion in mid-November 2022. It took around 300,000 years of human prehistory and history for the human population to reach one billion and only 222 years more to reach 8 billion.