Wind
Water
Mountains
100

the study of human society, especially the relationships in a society

What is social science?

100

a man-made system for moving water from its source to where it can be used for growing crops

What is irrigation?

100

the lack of resources to produce all the goods and services that are needed or wanted

What is scarcity?

200

the basic structures that help a community run, such as buildings and roads

What is infrastructure?

200

focusing on efficiently producing a limited number of goods and services

What is specialization?

200

an advanced state of human society with a high level of culture, specialization, infrastructure, stable food supply, government, technology, belief systems, writing, and social structures.

What is civilzation?

300

a man-made system for moving water from its source to where it can be used for growing crops

What is irrigation?

300

the branch of science and technology concerned with the properties of metals and their production and purification

What is metallurgy?

300

focusing on efficiently producing a limited number of goods and services

What is specialization?

400
the way of life of a certain people at a certain time

What is culture?

400

the lack of resources to produce all the goods and services that are needed or wanted

What is scarcity?

400

the study of human society, especially the relationships in a society

What is social science?

500

the basic structures that help a community run, such as buildings and roads

What is infrastructure?

500

an advanced state of human society with a high level of culture, specialization, infrastructure, stable food supply, government, technology, belief systems, writing, and social structures. 

What is civilization?

500

the branch of science and technology concerned with the properties of metals and their production and purification

What is metallurgy?

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