What is the problem in this article? what solution does the article propose? (site 1)

wire in brush may conduct electricity from cell to drill and vice versa electrc shock possible

the earths atmosphere is made up of nitrogen and oxygen. solids can turn into gasses through a process called sublimation. sublimation is the transition of a substance directly from the solid to the gas phase, without passing through the intermediate liquid phase.

hope this : d

a lot of it means it can be "burned" for energy and sold at one price. if it is scarce, the price will go up