Which critical environmental challenge did IKEA face within its cotton supply chain, as mentioned in the case "IKEA's Sustainable Cotton Supply Chain"? Multiple Choice A large amount of soot was produced throughout the chain. Child labor was used extensively across the entire supply chain, and the industry. A single pair of jeans used 3,000 gallons of water, depleting surface and groundwater supplies. Women earned about 25 percent less than men, many with poverty-level incomes