Aussie Slang: Swagman?

Questions

Scientific study of old age, emphasizing the social and behavioral aspects of aging?

Scotia What would you call the act of making a mark on a body by burning?

Sculptors which of the four teenage mutant ninja turtles was named after an artists and/or sculptor that did not occur in the same time period as the other three?

Scurvy is a lack of which vitamin?

Seattle which is the largest theme resort hotel?