estimate the quantity of hydrocarbon fuel that could be derived from 1 kg of the following sources serving as feedstock:

1. Soybeans
2. Corn
3. Wood

A. Identify the number or conversion factors you'll need for the calculation. 
B. Do the calculation 
C. Based upon your calculation, approximate the quantity and/or available landmass necessary to provide sufficient feedstock for each biosource, to generate 1 billion gallons of (renewable) fuel, by your own research, for the conversion(s).