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"The more trade grows as a proportion of global production, the more likely it is that diseases will be spread through trade, and the higher the economic cost of resulting trade bans," Perrings said. "What is at risk is the food we eat, the fibers we wear and build with, and the fuels we burn."The combination of a rediscovered past and a productive present led to major changes in the way Europeans viewed the world and themselves. These new perspectives led to four massive cultural movements: the Renaissance, the Protestant Reformation, the Scientific Revolution, and the Enlightenment.
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Sorry If it is wrong......
Because it weakened the power and influence of the brahmans
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Energy decreases because it moves up trophic levels since energy is misplaced as metabolic warm when the life forms from one trophic level are expended by life forms from another level. Trophic level exchange proficiency (TLTE) measures the amount of vitality that's exchanged between trophic levels.
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FDR wanted the US to join the Allied powers because of his sympathies to the British however before the attacks on Pearl Harbor when polled on going to war only 7-14 percent of Americans favored going to war. We now he had these sympathies because of his communications with Prime Minister Winston Churchill because they had created a friendship so FDR knew the situation the British were in so he lobbied congress to allow the US to at least do Lend Lease and also getting rid of bans in about the selling of arms to powers at war.