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

Which of these is an accurate and appropriate summary of paragraph 4? a) the speaker talks to her sister who understands politics. b) the speaker talks to her sister about all of her problems. c) the speaker wants her sister to tell her which party is best. d) the speaker is trying to find out who her sister is voting for.

Which of these is a controllable risk fator for disease

Who could you talk to if you were concerned about your own mental health or that of a loved one?