11-28-2008, 09:59 PM
An ecological rule of thumb is that only 10% of the energy that went into growing the food stock is available to the consumer.
In simplistic terms, 100 pounds of corn will give you 10 pounds of cow which will give you 1 pound of hamburger. If you consume the corn directly, it's a 10-fold advantage.
In simplistic terms, 100 pounds of corn will give you 10 pounds of cow which will give you 1 pound of hamburger. If you consume the corn directly, it's a 10-fold advantage.