Which of the following statements provides a reason for the widespread use of fossil fuels?
a. Fossil fuels as a renewable source of energy
b. Fossil fuels are readily available and inexpensive
c. Fossil fuels are not harmful to the environment
d. All of the above

Acivilization exists for several hundred yeaars, developing its own language. such a civilization probably has been: a. farming corn b. suffering from a lack of contact with the outside world. c. isolated by mountains or some other physical barriers. d. starving from lack of trade.