One possible way to determine the land amount needed for food production is to use an average number of Calories produced per acre for different foods and the number of Calories consumed from these different foods by an individual.
A. True
B. False

True. the more you know, the better of you will be.

You did not show us the image of the burger, but i shall try to answer as best i can.  when purchasing food, always consider the ingredients as well as the person who prepared it. consider if they were hygienic people or not, in case the burger was infected with bacteria. no mortal should place an infected burger into their mouth.   

Gwould be the correct answer