A bushel goes a long way. It's 55lbs of food. Lets do some math. According to statistics and averages, if every atheist (1.9M) in Canada grew a bushel of wheat it ends up like so: 1,900,000 x55 = 104,000,000lbs of wheat. 104,000,000 ÷ 365 = 284,931.5 people having a meal a day for a year.
Freewill