As a pure source of fat, olive oil is naturally carb - free, making it ideal for using as a base for keto salad dressings and low - temperature cooking. (ourpaleolife.com)
If gold and silver are as rare on other planets as they are on earth these metals might be used as a base for currency. (newscientist.com)
It serves as the basis of various scientific studies. (sciencedaily.com)