Which of the following is not a concern regarding the use of corn as a biofuel?A.Corn might be less available in the grocery store.B.Corn tortillas could become too expensive to buy.C.The color of corn is different than the color of gasoline or coal.D.Corn takes energy to farm, and that energy may be supplied by fossil fuels.SUBMITarrow_backPREVIOUS

Which of the following is not a benefit of using biofuels instead of fossil fuels?A.Biofuels are more sustainable than fossil fuels.B.Fossil fuels may be used in the production of biofuels.C.Biofuels are renewable.D.Biofuels produce less carbon dioxide when combusted.

Is it TRUE that (1) biofuels are expected make us more reliant on imported petroleum and (2) stimulate regional economies by creating jobs? *1 point2 is trueBoth are true1 is trueNeitherWhich has the greatest potential to solve the problem of over-reliance on fossil fuel than any other biofuel crop?*1 pointAlgaeSwitchgrassCornSunflowerThe term biomass most often refers to _____.*1 pointchemicalsorganic matterammonium compoundsinorganic matterWhich is an example of starch crops biomass feed stocks?*1 pointSugar caneCorn stoverOrchard pruningsWheat strawIs it TRUE that (1)  fossil fuels  undergo fast geological process  while (2) biofuels are readily available for man? *1 point1 is trueBoth are trueNeither2 is trueIs it TRUE that (1) rapeseed is main source of ethanol and that (2) the main drawback of using cottonseed oil as a car fuel is that it solidifies at low temperature? *1 point2 is true1 is trueNeitherBoth are trueBiomass is useful to produce _____.*1 pointfiberstransportation fuelschemicalsbiochemicalsIs it TRUE that (1)  bio-alcohol is created by the bacterial breakdown of starch in plants while (2) biodiesel is derived from the oil already available in such plants. Below are some of the main crops for biofuel production?*1 pointNeitherBoth are true2 is true1 is trueWhat is the common characteristic shared by biodiesel sources?*1 pointVolatilePlant-basedContain fatsCombustibleIs it TRUE that  biofuels (1)  have the potential to meet more than a quarter of world demand for transportation fuels and (2)  can stimulate regional economies by creating jobs?*1 pointNeither2 is true1 is trueBoth are trueBackSubmit

What makes biodiesel more sustainable than ethanol?A.Corn and soybeans are valuable cash crops.B.No one in Russia grows soybeans.C.Soybeans are better for the soil than corn.D.Corn is better for the soil than soybeans.

Using corn for energy is an example of _______.

Which are CORRECT about biofuels?I. Creates more carbon emissionsII. Leads to lower fossil fuel importsIII. Helps with protecting our greenhouse gases*1 pointI & IIII & IIII, II, & IIII & IIIWhat has made stem cell research controversial? *1 pointscience should not alter the human genomeembryos are human beingsharvesting adult stem cells is dangerousstem cell research is too expensive for governments to fundWhich cellular structure would be most necessary for muscle cells to carry out their function?*1 pointChloroplastRibosomeMitochondrionVacuole