Identify the main idea of the paragraph down below. How has Earth's population become so farge? What has caused our population to grow so quickly? Many factors cause populations increase One major cause of population growth is a falling death rate. The death rate is the number of deaths compared to the total number of individuals in a population at a given timeOn averageabout 154,080 people die each day worldwide. The death rate has decreased for many reasons. Better health care, more , and cleaner water have helped more peopleyoung and oldlonger, healthier lives.