Prize puzzle: Puzzling resources
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Biogas can be obtained not only from plant-based raw materials. What do scientists at the Giessen-Friedberg University of Applied Sciences want to turn into gas soon?
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10 points
Which of the following artificial light sources has the highest efficiency in terms of luminous output?
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10 points
What is the benefit of measuring coating thickness in the wet state?
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10 points
What is used for the coating of condoms?
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10 points

What is the „greenest" coating technology currently available to the industry?

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10 points
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