Population Explosion
Green Revolution
Before the Green Revolution
Causes and Effects
100

This term describes the rapid growth of the world's population in the 20th century

What is population explosion?

100

This term refers to the use of new agricultural technology to increase food production

What is the Green Revolution?


100

Before modern agriculture, farmers used these to grow crops

What were hand tools?

100

This development resulted in lower death rates and contributed to population growth.

What were medical advances (vaccines/antibiotics)?
200

Between 1900 and 2018, the global population grew from 1.65 billion to about this number

What is 7.6 billion?

200

These crops, like wheat and rice, were specifically developed to produce more food per acre

What are high-yield crops?

200

Crop yields before the Green Revolution are best described by this word

What is low?

200
This resulted in overcrowded cities because of population growth.

What is urbanization?

300

This was the main reason the population increased so rapidly after 1900

What is the lowering of death rates?

300

This was one major result of the Green Revolution that helped feed growing populations

What was an increase in food production?

300
This was a common result of low food production before modern farming methods

What is famine?

300
These programs implemented by the government helped reduce the spread of diseases

What are public health programs?