Carbon Tax vs. Cap and Trade

Our world is full of pollution. If I were elected leader, then I would impose carbon taxes. Carbon taxes impose a tax on each unit of greenhouse gas emissions and gives companies an incentive to reduce pollution. It costs companies less to pay a carbon tax than to pay the regular tax. 

Many people say cap and trade is better. I believe this is not true because cap and trade "sets a maximum level of pollution, a cap, and distributes emission permits among firms that produce emissions. Companies must have a permit to cover each unit of pollution they produce, and they can obtain these permits either through an initial allocation or auction, or through trading with other firms." 

The negatives to cap and trade are that it provides uncertainty about the cost of achieving reductions. 

Attached is what Carbon tax and Cap And Trade graph would look like: 

Here is the article: http://www.theguardian.com/environment/2013/jan/31/carbon-tax-cap-and-trade