Answer:
8.5 billion.
Step-by-step explanation:
The world population is the sum of all the inhabitants of Planet Earth, which in 2021 add up to an approximate total of 7.8 billion people, mainly located in China (1.4 billion) and India (1.3 billion). Thus, Asia is the most populous continent on the planet, although Africa is where the population is growing at the fastest rate, with countries like Nigeria soon to be in 3rd place, surpassing the US.
Given that the world population grows year after year at a rate of 1.1%, it can be stated that by the year 2025 the world population will approach 8.5 billion inhabitants.