SCI 200--UNIT 3 CHALLENGE 1 QUESTIONS WITH CORRECT ANSWERS

The standard of living in the United States requires five hectares per person, which is equivalent to a little more than __________. a.) five football fields b.) nine football fields c.) three football fields d.) seven football fields Correct Answer b.) nine football fields in the United States, the standard of living requires about five hectares per person. If every person on Earth required five hectares to live, we would need __________ to sustain the current population. a.) five Earths b.) four Earths c.) two Earths d.) three Earths Correct Answer d.) three Earths Developing nations' standard of living requires __________________, which is a little less than one football field. a.) 0.5 hectares/person b.) 100 hectares/person c.) 10 hectares/person d.) 5 hectares/person Correct Answer a.) 0.5 hectares/person Which three subsistence crops supply over 50% of human caloric needs worldwide? a.) Barley, rice and corn b.) Corn, rice and potatoes c.) Rice, potatoes and wheat d.) Wheat, corn and rice Correct Answer d.) Wheat, corn and rice Which of the following would be considered a subsistence crop? a.) Tea b.) Potatoes c.) Cotton d.) Coffee Correct Answer b.) Potatoes Which of the following is essential for food production? a.) Genetically-modified organisms