What do political ,economic and social implications with fossil fuel coal

This word for a bug or malfunction was popularized in the 1962 book into orbit by the mercury astronauts

In africa what do they call a crop grown for direct sale and not for use?

What was a goal of the zapatistas of mexico in 1994? a. to recover land taken by spanish conquerors b. to reform mexico's failing agricultural crop c. to wage war with mexico's southern neighbors d. to reunite latin america under the spanish flag