The correct answer is A., Natural yeasts feed on the sugar in grains or fruit. After, the liquid ferments into alcohol. The alcohol is then exposed to oxygen and the acetic acid bacteria to ferment again over weeks or months, forming vinegar.
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While the cuticle has several advantages such as protection, they do not confer much advantage to larger eukaryotes. This is because of their limiting factor to growth (size). The cuticle would also restrict development of different skin structures such as fur. Additionally, while the cuticle provides leverage for muscular movements on arthropods, nematodes, and flatworms, it is not necessary for larger animals since the same function is rendered by the endoskeleton.
Answer:
Water is a polar molecule and also acts as a polar solvent. When a chemical species is said to be "polar," this means that the positive and negative electrical charges are unevenly distributed. The positive charge comes from the atomic nucleus, while the electrons supply the negative charge. It's the movement of electrons that determines polarity. Here's how it works for water.
Micro-organisms like bacteria prefer warmth, moisture, and darkness to thrive.
