1rift
to separate two pieces from one another
2desertification
the process by which an area of land turns into a desert
3genocide
the mass murder or people from a particular ethnic group
4refugee
a person who flees a country because of violence, war, or persecution
5disaster
a sudden event, such as an accident or a natural catastrophe, that causes great damage or loss of life.
6subsitence agriculture
growning only enough to feed oneself and one's family
7watershed
area of land drained by a river or river system
8cassava
a tuberous plant that has edible roots.
9colonialism
a policy based on control of one country by another
10missionary
someone who tries to convert others to a certain religion
11coup
an action in which a group of individuals seize control of a government
12harmattan
a wind off the atlantic coast of africa that blows from the northeast to the south, carrying large amounts of dust.
13biodiversity
the wide variety of life on earth