Which innovations and ideas of muslim scholars could still be used today?

 The correct answer is :  Use of water resources such as: irrigation systems, dams, canals, underground wells and aqueducts. The use of medication such as: antiseptics and various medications. The types of dienes in decorative art such as: geometric, floral design, patterns and various shapes. Achievements in medicine such as: the establishment of hospitals with separate rooms and teaching centers, anyone can receive treatment, surgeries, the use of needle, thread and stitches after surgery. Contributions in mathematics, algebra, geography and navigation. They made the division of the regions by climatic zones, created very precise maps with commercial routes.

in his book, the riddle of the rosetta stone, james giblin talks about how there was a young british polymath and physician named thomas young who made a lot of advances on the deciphering of the rosetta stone. he says that even though young made a lot of mistakes because he was working under false assumptions, he also made huge contributions like deciphering three out of the seven symbols (more than anyone else before him). young published his findings and continued his good work but he wasn't able to progress much further due to some unfavorable situations, he still laid the basis for many other scholars and of course for the man who has been generally known to have deciphered it, jean-françois champollion