But, realizing that local temperatures everywhere are so very variable and much more extreme than the global changes that they were saying would devastate the planet, it would be hard to convince anyone long term that the planet was continually getting warmer.

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Consumers exercise their choices with the products that they buy, so consumption taxes are variable at the state and local levels.

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Data is also collected on the call for violent jihad in the form of materials given out at the mosque or promoted by the local imam or mosque leadership - the dependent variable.

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Fellow Conservative Simon Hart called for business rates to be variable across seasons, pointing out that footfall in Tenby's local shops was significantly higher in the summer than in the winter.

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