Answer:scientists:Albert EinsteinIsaac NewtonMarie CurieGalileo GalileiCharles DarwinStephen HawkingNikola TeslaMichael FaradayLouis PasteurArchimedesAristotleAda LovelaceRosalind FranklinJames Clerk MaxwellCarl LinnaeusAlan TuringJonas SalkAlexander FlemingEnrico FermiNiels Bohr20 elements:Hydrogen , Helium , Lithium , Beryllium , Boron Carbon Nitrogen Oxygen , Fluorine , Neon , Sodium , Magnesium Aluminum Silicon Phosphorus Sulfur Chlorine ,Argon, Potassium and Calcium.