Thus, the atmosphere blocks about 77% of the Sun's UV, almost entirely in the shorter UV wavelengths, when the Sun is highest in the sky (zenith). Of the ultraviolet radiation that reaches the Earth's surface, more than 95% is the longer wavelengths of UVA, with the small remainder UVB. There is essentially no UVC.
Can Vegetarians Eat Butter? Those who follow a strict vegetarian diet are in fact allowed to eat butter as it is not a type of meat in any sense. People who are vegans however are not allowed to eat butter because of the fact that it is an animal byproduct. Many people confuse vegans and vegetarians because they seem similar, though there are some very distinct differences which are important to take note of.
Lactose, being a water soluble molecule, will still be present in small quantities in the butter unless it is also fermented to produce cultured butter. cultured butter is 'better' in the sense that it has less lactose than non-fermented butter, if lactose is a concern for you.lactose is insulinogenic, and can create insulin spikes, which doesn't really help you if you're looking for weight loss.from http://en.wikipedia.org/wiki/Lactose_intolerance#Dairy_products.uthentic cultured butter uses cultures to develop the butter. These bacteria cultures, which are not present in regular butter, provide many benefits; the primary benefit being that they aid in digestion.