Multiple Select QuestionSelect all that applyWhich of the following three energy sources supply almost 80 percent of the world's commercial energy needs at the current time?Multiple select question.CoalPetroleumNuclear energySolar energyNatural gas

Multiple Choice QuestionFossil fuels currently account for about Blank______ percent of the world's commercial energy needs.Multiple choice question.8054248

Select all that applyBiofuels are an energy source made from Blank______.Multiple select question.used vegetable oilpetroleumplant materialsanimal fat

Multiple Choice QuestionRecent estimates show that the United States could provide 80% of their energy needs with renewables by Blank______.Multiple choice question.203020502080

Multiple Select QuestionSelect all that applyWhat are the two primary sources of thermal pollution?Multiple select question.MiningLeaking landfillsRunoffIndustrial discharge

Select all that applyWhich of these are natural resources that are depleted over time? (Check all that apply.)Multiple select question.CashNatural gas wellsInventoryTimber