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The black exhaust Black is apparently a depressing color. The reason should be rich mixture. That is to say, the mixture of gas in cylinder component is after dark normal level. The incomplete combustion gas within the combustion chamber make the carbon particle exhausted using the waste gas. Failure may well come from the following reason: It is clear that these two perspectives are going to draw swords against the other frequently. Although most people agree that efficient financial markets are best for everyone, the steps that government have to take to have there often run counter for the microeconomic interests of business. Sometimes a merger should be blocked to foster competition. Sometimes disclosures must be legislated to ensure consumers will make informed decisions. And sometimes certain activities should be regulated or prohibited to ensure that some are certainly not financially harmed by others.