What is scascity?

What was the first electricity used for? How many laws does Newton have? How do you clean the white grout in a shower without harming the grout in any way? Does everything have a cause? What term is used to describe substances that do not conduct? What does not describe an active virus? How do you give an introduction to any topic? What is the first step for the scientifc method? It is a scientific trait that shows awareness of one's shortcomings? Which method requires moving to new solutions until one works? How could you get back the dissolved salt? What is first principle study? Which type of implementing instruction would be the most appropriate for a resource list? Is cotton a living thing? What does it mean when elements are unstable? Are molecules in hot water different then molecules in cold water? How to clear and dispose of waste safely? What energy source powered the steam engine? How long is the GBR? When the particles of a substance move about faster they spread out causing the substance to what?