What are three examples that are benifical to humans?

What is the meaning of fair test in science? Who were bohm and jacopini? What are the advantages of scanning as type of reading? When the atmosphere did not have oxygen where did life exist? How many meters are in one gigameter? Is guy a common nouns? Why capacity of refrigerator is in liters? Is a rating scale qualitative or quantitative? When new memories impair the retrieval of old memories? What can cause an increase in the density of ocean water an increase in temperature and a decrease in ocean circulation an increase in temperature and a decrease in salinity a decrease in temperature? What are the elements of a good scientific investigation? How do you hipnotise someone to act nice? Why does evaporation cool water? Do insulated cookie sheets conduct heat well? Why should you save electricity? What is the physical state of water at 250 degree Celsius? Which factors should help decide the length of a study session? Is frozen lemonade poured into cold water diffusion? How highcold is Mount Fuji What is it's colour Is it always cold there Who found Mount Fuji Who was the first climber Have people died there How Many Does it often snow there Where is it? What do need to study?