The human population has grown so much over the years. What was the global population during the 1950s?

• 2 billion

• 2.5 billion

• 3 billion

• 4.5 billion

Answer explanation

This means that from the 1950s, the population has more than tripled in only about half a decade (from 2.5 B in the 1950s, to 8 B today).

Reaching a global population of 8 billion was a significant milestone. During what specific month in 2022 was this officially recorded?

• September

• October

• November

• December

Answer explanation

A baby girl born in Tondo, Manila, is being considered as the symbolic eighth billion person in the world. Vinice Mabansag was born at Dr Jose Fabella Memorial Hospital at 1:29 am.

On what year will the global population approximately reach 9 billion?

• 2037

• 2040

• 2043

• 2046

Answer explanation

By 2100, human population is estimated to reach 10.4 B.

As of 2024, what is the most populated country?

• India

• China

• United States

• Indonesia

Answer explanation

For the first time since the 1950s, India took over China's spot as the most populated country of the world in 2023 due to a decreased recorded fertility rate in China -- a result of strict governmental laws and policies.

In what continent is population growth rate observed to be highest?

• Asia

• North America

• South America

• Africa

Answer explanation

Aside from increased birth and fertility rates and decreased mortality rates, among the causes of this phenomenon are childbirth at young age, low contraceptive use, and decline in HIV/AIDS-related deaths.

Fertility rate is the average number of children born to a woman during their reproductive years. Which correctly states the change in the fertility rate from 1950s to present?

• 6 in the 1950s; 3 at the present

• 5 in the 1950s; 2.8 at the present

• 5 in the 1950s; 2.3 at the present

• 4 in the 1950s; 2 at the present

Answer explanation

With a fertility rate of almost 7 children per woman, Niger is the country with the highest fertility rate in the world followed by Mali.

Life expectancy is the estimated average of remaining years of life. What is the current life expectancy of females and males, respectively?

• 80 and 76

• 78 and 72

• 76 and 70

• 72 and 68

Answer explanation

An increasing trend is observed for the overall global life expectancy, as it was only 66.8 years way back in 2000.

Currently, what is the estimated average global population density?

• 54 humans per km²

• 58 humans per km²

• 62 humans per km²

• 66 humans per km²

Answer explanation

In 2024, Macau is listed as the most densely populated country (21,674 humans/km²), and Greenland as the least densely populated country (only 0.14 humans/km²).

In 2019, the top 10 causes of human deaths accounted for 55% of global deaths. What was the top 1 leading cause of death recorded?

• stroke

• cancer

• respiratory infections

• ischemic heart disease

Answer explanation

Ischemic heart disease refers to heart weakening caused by reduced blood flow to your heart. Typically, this reduced blood flow is the result of coronary artery disease, a condition that occurs when your coronary arteries narrow.

What historical event is estimated to have the highest death toll globally?

• World War II (1939-1945)

• Genocide of indigenous people in the Americas (1492-1996)

• Black Death (1347-1351)

• Yangtze River Flooding (1931)

Answer explanation

The mean (average) estimate of the death tolls are as follows:

Yangtze River Flooding - 3 M

Genocide of indigenous peoples in the Americas - 12 M

World War II - 64 M

Black Death - 122 M