Can 900,000 volts kill a human?

Nope, voltage does not kill. You could be touching a 90000000000000000000000000000 volt wire and feel only a tingly sensation if the current was .001 amps. It is the current that kills not the voltage. The voltage only 'pushes' the current threw the wire. Why does current kill? because our body works threw electrical impulses delivered by the nervous system. When you touch a wire that has a high 'current' the current flows threw your body and your body confuses it for electrical impulses from the brain causing your muscles to go crazy, heart attack etc,. and also serious burning. What causes the current? voltage causes the current, what determines the current? resistance.