Fry remembered a curious adhesive – a strong and yet easily removed “unglue”– that Spencer Silver, another 3M researcher, had come upon several years earlier. . . . Silver felt the unusual adhesive might have some commercial value, and so he demonstrated it to various colleagues, including Fry. At the time, no one had come up with a use for it, and so the formula for the weak adhesive was filed away – until the Monday morning when Fry came to work with the idea of making sticky bookmarks that could also be removed without damaging the book. —The Evolution of Useful Things, Henry Petroski Why was Spencer Silver's work an essential part of Fry's invention? He worked alongside Fry on the sticky notes. He convinced other people to believe in Fry's invention. He told Fry about the "unglue" that he had discovered. He came up with a commercial use for the "unglue."

Okay yall solve this riddle what gets wetter as it dries

Vvnici prece di evidence would best support teason #to the history of using animals for research extends asfar back as 322 bce, when early greek physician-scientists, such as aristotle and erasistratus,performed various experiments on living animals.0 animal research played an essential role in thedevelopment of herceptin and tamoxifen, twomedications that have already saved the lives ofthousands of women who have been diagnosed withbreast cancer.even those who believe in testing on animals when it isnecessary for vital medical research practice what isknown as "the 3 rs"-reduction, refinement, andreplacement to reduce the number of animals usedfor testingbiologists believe that chimpanzees share at least 98.4percent of the same dna as humans and gorillas shareat least 97 percent, making primates a popular andlikely choice for the testing of products intended for humans

Which part of the original work should the adaptation retain