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Sophia - Environmental Science - Unit 3 Challenge 1
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Sophia - Environmental Science - Unit 3 Challenge 1 1 — Human Population Growth Determine the amount of natural resources required for each person to live. 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 2 — Agriculture Practices: Plant Sources Identify key aspects of plant sources related to agriculture practices. Which three subsistence crops supply over 50% of human caloric needs worldwide? • a.) Wheat, corn and rice • b.) Barley, rice and corn • c.) Corn, rice and potatoes
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