Historically, artisanal breads were produced by capturing wild yeasts from the air. prior to the development of modern yeast strains, the production of artisanal breads was long and laborious because many batches of dough ended up being discarded. can you explain this fact?

You and a group of friends are spending your vacation hiking through the mountains. it is cold in the mountains. you will be expending a lot of energy while hiking and you will need plenty of energy to keep you warm. you should pack foods high in to provide the most energy or kilocalories per gram of food. a) carbohydrates b) lipids (fats) c) proteins d) sugars