Brazil produces ethanol which has an 8:1 return on energy investment while America uses corn which has a range of 1:0.7 -1.67?
Brazil uses sugar cane instead of corn for their ethanol production, which allows them to eliminate one step of the refining process.
When corn is used, the starch in corn must be broken down and converted to sugar.
The Brazilian climate is more conducive to growing sugar cane.
Corn production in the United states is primarily used as feed for livestock as 70% of the crop is fed to cattle, poultry and hogs.
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