What are major sustainability standards in coffee, and what are major features across sustainability standards?

Case Questions(1)What are major sustainability standards in coffee, and what are major features across sustainability standards?(2)What are the major objectives of Fairtrade, and what role does the farmers premium play in that context?(3) What are similarities and differences between Fairtrade’s premium and Nespresso’s real farmers’ income, and how do you explain both similarities and differences?these sources can be used, but others can be as well if needed.General informationSustainability certification: https://en.wikipedia.org/wiki/Sustainability_standards_and_certificationSustainable sourcing in food: http://papers.ssrn.com/sol3/papers.cfm?abstract_id=1678472Coffee barometer 2014: https://hivos.org/sites/default/files/coffee_barometer_2014_report_1.pdfNespresso: https://en.wikipedia.org/wiki/Nespresso, https://www.nespresso.com/Fairtrade: http://fairtradeusa.org/, http://www.fairtradefederation.org/Fairtrade Wikipedia: http://en.wikipedia.org/wiki/Fair_tradeFairtrade vs. Nespresso AAANespresso sustainability approach: http://www.nestle-nespresso.com/sustainability/the-positive-cup/coffeeNespresso AAA: http://sustainabilitymbachallenge.com/wp-content/uploads/2012/09/NespressoBackground.pdfReal farmers income: http://www.nespresso.com/ecolaboration/us/en/article/5/3019/about-our-coffee-commitment.htmlFairtrade certification / premium: https://en.wikipedia.org/wiki/Fairtrade_certificationCritical article about fair trade: http://www.ssireview.org/articles/entry/the_problem_with_fair_trade_coffeeexample essay is attached for guideline for paper