Sound/ music colors and maybe just like drawing
Photography might be banned in many museums, and historic sites, reason being the museum or historic site is exclusive, and has an admission fee, spoiling revenue for the museum/historic site, people will be like; "Oh, I've already seen that. It looks boring.", Or it may be disrespectful, such as if you are in a historic tomb, or for example, the preserved body of Soviet leader Lenin, it can disrespect the curators of the museum, and in a spiritual way, the body itself.
Answer:
1. A roux is used for thickening sauces and soups.
2. the ratio is 1:1
Explanation:
rooms are used for thickening sauces and soups they are made out of flour and fat with the ratio of 1.1 which is equal parts fat to equal parts water