Chapter 12

Earth is an open system with respect to...

• matter

• energy

• information

• people

Earth is a closed system with respect to...

• matter

• energy

• information

• people

The Gaia hypothesis states that Earth is a...

• nonliving planet

• nonliving planet with living parts

• nonliving being

• living being

Tags

NGSS.MS-LS2-3

Fully modern humans have lived on Earth for about...

• 1000 years

• 10,000 years

• 35,000 years

• 1 million years

Hunter-gatherer societies are often...

• nomadic

• semipermanent

• permanent

• very dense

An early invention that helped raise food production in agricultural societies was...

• mass production

• gunpowder

• sustainable development

• the plow

Industrial societies were made possible by inventions such as the steam engine and...

• mass production

• gunpowder

• sustainable development

• the plow

A renewable resource is one that regenerates...

• slowly

• not at all

• quickly

• without human action

A nonrenewable resource is one that regenerates

• only after human action

• slowly or not at all

• quickly

• without human action

An ethic is a set of rules in a society that determines...

• right and wrong

• holidays

• economic function

• government