In which countries of western europe are both french and german spoken

When you cross a time zone going east, what happens to the time

As water is cooled from 4 c to 0 c its density

When reading a textbook blank. a) it’s safe to assume that the ingot is not biased b) you should watch for fallacies in information and author bias c) you should fact check everything you read d) it is understood that academic sources are not biased