Penicillin was discovered by accident., True, False, Post-it Notes are used all around the world, True, False, Post-it Notes have a strong adhesive., True, False, Velcro was invented after studying nature, True, False, Who discovered penicillin?, a) George de Mestral, b) Alexander Fleming, c) Spencer Silver, When were Post-it Notes introduced?, a) 1948, b) 1970, c) 1980, What inspired the invention of Velcro?, a) Shoes, b) Nature, c) Books.
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