I need help with these two biology questions. I provided a picture of Table 2.1 which goes with question 10.

Table 2.1 Elements in the Human BodyPercentage of Body MassElementSymbol(including water)Oxygenno65.0%Carbon18.5%H9.5%96.3%HydrogenNitrogenN3.3%CalciumCa1.5%PhosphorusP1.0%PotassiumK0.4%SulfurS0.3%3.7%SodiumNa0.2%ChlorineCI0.2%MagnesiumMg0. 1%Trace elements (less than 0.01% of mass): Boron (B), chromium(Cr), cobalt (Co), copper (Cu), fluorine (F), iodine (1), iron (Fe),manganese (Mn), molybdenum (Mo), selenium (Se), silicon (Si),tin (Sn), vanadium (V), zinc (Zn)