Despite the variety of their physiological function and differences in physical properties--silk is a flexible fiber, horn a tough rigid solid, and the enzyme pepsin water soluble crystals--proteins are sufficiently similar in molecular structure to warrant treating them as a single chemical family.
Disney's 'Tower of Terror' Closing to Make Way for New 'Guardians of the Galaxy' Ride. Looks like another Disney attraction is joining its sizable graveyard of defunct rides.
Walt Disney World rarely closes. Since it opened in 1971, the resort's theme parks have been shut down only four times, all for hurricane-related weather. The most recent closures were for Hurricanes Frances and Jeanne in 2004. The resort also ceased operations during Hurricane Floyd in 1999.