I think its Oxygen.
ancient cyanobacteria produced Earth's first oxygen-rich atmosphere, which allowed the eventual rise of eukaryotes. T<span>he chloroplasts of eukaryotic algae and plants are derived from cyanobacteria</span>
Electrical power, in watts = (voltage, in volts) x (current, in Amperes)
From largest to smallest- atom, nucleus, proton and electron
