Flex 2-1

Expanding World Population

paragraph 1

vocabulary

anthropologist - 人類学者

species - 種(しゅ)

technological
- 科学技術の，技術革新による

milestone - 重要な出来事，重要な段階

​human species

​appeared on earth...

Word Cloud

When do you think??

​????????????

​textbook

​????????????

google

​????????????

wiki

​????????????

wiki

Word Cloud

When do you think??

​anyway...

​let's talk about population!!

Word Cloud

How many people are there in the world now?

For a long time,

​the population stayed low

​

however,...

​sharp increase!!

Word Cloud

why?

​textbook says...

the sharp increase began
with several technological milestones
in history.

Word Cloud

What technology helped the sharp increase in population?

question from the text!!

Multiple Choice

The world population began increasing due to...

• the ice age

• dinosaurs

• the invention of smartphones

• technological milestones

good job!