S.S. Flashcards
1
Q
scarcity
A
all societies must address the problems that resources are limited and needs and wants are unlimited.
2
Q
interdependence
A
because we live on one planet and cannot satisfy all of our own needs, we depend on others for mutually beneficial solutions to common problems
3
Q
silent barter
A
a process in which people exchange goods without contacting each other directly.
4
Q
Sahara
A
a large, hot desert in North Africa that covers about 3.5 million square miles
5
Q
savanna
A
a vegetation zone of tall grasses and scattered trees, with a long rainy season
6
Q
Niger River
A
the longest river in West Africa, and a kind of trading highway in early times
