What was the population of the world a thousand years ago, and how does it compare to today?

Describe the metaphor used in the video about the glass and how it relates to population growth.

What factors contributed to the increase in population according to the video?

• Better transportation

• Better medicine and agriculture

• Increased migration

• War and conflict

When did the world population first reach 1 billion, and what major changes occurred after that?

1. What do experts say about the future population growth?

• 1. It will likely level out

• 1. It will continue to grow indefinitely

• 1. It will decrease rapidly

• 1. It will depend on technological advancements