NEET BIOLOGY

Detailed explanation-1: -The dramatic growth of world’s population has been driven largely by increasing numbers of people surviving to reproductive age, and has been accompanied by major changes in fertility rates, increasing urbanization and accelerating migration.

Detailed explanation-2: -The fundamental cause of the acceleration of growth rate for humans in the past 200 years has been the reduced death rate due to changes in public health and sanitation.

Detailed explanation-3: -The growth of the world’s population over the past two centuries is largely the result of advances in modern medicine and reductions in global poverty. These have significantly reduced infant, child and maternal mortality, contributing to an increase in life expectancy.

Detailed explanation-4: -But with innovation and industrialization, energy, food, water, and medical care became more available and reliable. Consequently, global human population rapidly increased, and continues to do so, with dramatic impacts on global climate and ecosystems.

Detailed explanation-5: -1: The estimated growth of the human population from 10, 000 BCE–2000 CE.: The human population has grown most sharply in the past 200 years. Globally, the growth rate of the human population has been declining since 1962 and 1963, when it was 2.20% per annum. In 2009, the estimated annual growth rate was 1.1%.