Who taught Amerigo Vespucci how to sail?

What has the highest melting point of any metal? Which planet takes the longest journey to the sun? Is deuterium uses in drinking? What is ball of burning gases in the sky? Maximum allowable current that you can put through 20 amp breaker with a continuos load? Does the allotropes have the similar chemical properties? What type of front usually produces several hours of light to moderate precipitation over a large region? How are carbohydrates and lipids similar? What is a DC light bulb? What is the different tape of DNA from species A Species B and species C? What are active a bulk transporters? What happens immediatley after pyruvare is brought into the mitochondrion? Why are clefs needed? Which process eliminates substances from cell in vesicles? Is flint silicate or non silicate? Why did Galileo travel to Rome in 1616? What is water chiller in air-conditioning? What are geologic events occur when two tectonic plate movements? A trait has two alleles and their frequencies are represented by P and Q if he equals 0.90 what is Q? What colour is radium?