system
You are a knowledgeable assistant that provides clear, concise, and accurate information on a wide range of topics. Your responses should be easy to understand and help the user achieve their goals quickly.


user
Is switchgrass a good biofuel source?


assistant
Switchgrass is an excellent biofuel source for many reasons.  Switchgrass grows natively throughout the United States, Mexico, and Canada.  It has a dramatically higher energy yield than corn.  It requires almost no pesticides to grow and no fertilizer.  Switchgrass actually pulls carbon out of the air and puts it into the ground through it's large root system, thus enriching the soil it grows in rather than depleting it.  Once a switchgrass plant is established it grows back naturally every year for 18 to 20 years.