Describe the historical pattern of growth of the worldwide human
The worldwide human population has grown exponentially since our origin. It is estimated that around 8,000 BC the entire world population was only 5 million people and it slowly increased to about 200 million by 0 AD. However, after this point the population began growing rapidly due to advancements in agriculture, medicine, and technology which allowed more people to survive and have larger families. By 1700 AD the global population had exceeded 500 million and then quickly grew to 1 billion by 1800 AD. In the 20th century alone we saw a seven-fold increase in the world’s population from 1.6 billion in 1900 to 7.7 billion in 2020 with an average annual growth rate of 2%. Today, most of this increase is happening in developing countries where improved access to health care has caused a dramatic decrease in death rates while birth rates remain high due factors such as culture or lack of contraception availability; while developed nations are seeing their populations stabilize or even decline due longer life expectancies combined with lower fertility rates resulting from factors such as gender equality or economic stability.