Is the following questions true or false, explain why? Spontaneous fermentations are quickly initiated because yeast com

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Is the following questions true or false, explain why?
Spontaneous fermentations are quickly initiated because yeast
comprises the largest number of microbial cells on grape
berries.
During a spontaneous fermentation, non-Saccharomyces yeast spp.
produce high levels of alcohol and heat to out-compete other
microorganisms.
Gut microflora are stimulated to join wine polyphenol compounds
into larger structures suitable for absorption into the body
Styles of sherry are characterised based on their degree of
flor, alcohol concentration, residual sugar concentration and grape
variety used.