CYANOBACTERIA ARE ONE MOST OF THE MOST FAMOUS BACTERIA -KNOWN FROM PRECAMBIAN DAYS AND DISTINGUISHED AS MULTITASK MASTERS -EARLIER CONSIDERED RESPONSIBLE FOR OXYGENATED ATMOSPHERE WHERE AEROBICS FLOURISHED AND FOR NITROGEN FIXING ABILITIES BUT KNOW VALUED EQUALLY FOR THEIR CONVERTINF LIGHT ENERGY INTO ELECTRICAL ENERGY ;AND ALSO FOR CAPABILITY TO PRODUCE HYDROGEN AND ORGANICS LIKE ETHANOL ETC