source of light source of liquid source of livelihood source of living source of local source of love source of magic source of magnesium source of material source of medical source of mercury source of methane source of moisture source of money source of motivation source of much source of natural source of new source of news source of nitrogen source of noise source of nourishment source of nutrients source of nutrition source of oil source of omega source of organic source of other source of our strength source of oxygen source of pain source of peace source of phenylalanine source of phosphorus source of plant source of pleasure source of political source of pollution source of potassium source of potential source of power source of pressure source of pressurized source of pride source of problems source of profit source of protein source of proteins source of public source of pure source of radiation source of raw materials source of reference source of reliable source of revenue source of risk source of satisfaction source of scientific source of security source of selenium source of serious source of shame source of social source of sodium source of soluble source of sound source of spiritual source of stem source of strength source of suffering source of sugar source of supply source of support source of sustainable source of sustenance source of tax source of tension source of the data source of the energy source of the fire source of the funds source of the infection source of the information source of the leak source of the money source of the name source of the nile source of the noise source of the outbreak source of the pain source of the power source of the problem source of the river source of the signal source of the sound source of the transmission source of the virus source of the voice source of the water