Iam confused on how this table works

Alightning strike consists of charge moving from a cloud to the ground . in one particular case, the electrons in a lightning strike are confined to travel within a radius of 1.5 m and to move at a speed of 5.0 x 10 m/s. if the density of electrons in the strike is 10'15 electrons/m what current is carried by the lightning ?

Which of the following correctly describes the early view of catastrophism?

Individuals who live below the poverty line get seriously ill more often than those who do not what could be the hidden variable in this situation?