I really like the fuel-efficient cars, as it saves fuel our cars is one of the real action to conserve oil, because oil is a limited energy resources contained in the earth. To create it requires a very long time. takes millions of years. If residents use their cars to save the earth, of course, this means millions of liters of oil can be saved in one day usage. Because every day millions of litter from petroleum use by residents of this earth, from all continents. Crude oil continues to be taken out of the earth, if crude oil intake is not balanced with earth's ability to provide oil, maybe we'll come to a point, where the oil will run out. I can not imagine if we have at the moment. so let us save energy.
For some people, math is a difficult subject to master. If parents who have problems like that, of course, will have trouble when they serve as a math homework help for their children. It would be nice when the children ask their parents about the algebra 1 or algebra 2 , they can answer it. But, how do we study mathematics? Should we go back to school? I think, there are many ways to learn math again. For example, by using an online tutorial that provides math statistics help , calculus help , geometry help , Algebra 2 Help and others. I think, our kids will be more proud of us, when we could help for their math homework.