What is a chaparral?Where can you find them?

It's a biome of drought-tolerant shrubs. You find it in semi-arid deserts, particularly in California and Mediterranean regions. It is much of what burns when you see southern CA fires on TV.

See http://en.wikipedia.org/wiki/Chaparral

A chaparral is a biome characterized by drought-tolerant shrubs. It can be found in semi-arid deserts, with the most notable areas being in California and Mediterranean regions. This type of vegetation contains mostly shrubs and small trees that are adapted to survive in hot and dry climates. Chaparrals are prone to wildfires, which can be observed during the southern California fire seasons.

If you would like more detailed information about chaparrals, I recommend visiting the relevant Wikipedia page at http://en.wikipedia.org/wiki/Chaparral. There you'll find a comprehensive overview of the biome's characteristics, distribution, and other related information.