The following text refers to question.
A spoon full of beer sounds unusual; ______________, it could be the future of a drink popular around the world. A brewery in Eastern Germany has developed an alcohol-free beer powder to reduce the heavy carbon footprint of beer exports. It’s a completely new product, and such an approach has never existed before. According to the inventors, using powdered beer can save about 3 to 5% of the CO2 emissions for Germany alone, and globally, it would be about half a percent of CO2 emissions. The powder can create lager, pilsner, or dark beer, and the first beer tastings with the powder brew have been promising. The company is confident to have a market-ready product by the end of 2023. In the future, breweries could get beer powder and add their water before filling it into bottles.
Available in: https://www.newsinlevels.com/products/powdered-beer
According to the text, the expression “carbon footprint”, in the second line of the text, has to do with:
