The energy from the movement of electrons through the electron transport chain is directly used to synthesize atp.

an ion is a charged atom or molecule. it is charged because the number of electrons do not equal the number of protons in the atom or molecule. an atom can acquire a positive charge or a negative charge depending on whether the number of electrons in an atom is greater or less then the number of protons in the atom.

.) the observation by semmelweis that more mothers died of childbed fever when their doctors also worked in the morgue

b. a lightning bug, plug of grass, and a worm

this would be about 43%