What are 3 characteristics of scientific laws?

How do you test for metals? Why did Fiona wood invent the spray on skin? Define in context the scientific method or Describe qualities of the scientific method? What will happen if you put a plant in a vacuum? Which one of these salts melt ice quicker regular table saltkosher salt epsom salt and rock? Difference between raincoat and rain slicker? What store's energy that is released in respiration come from? How do you get rid of someone? A change in gene frequencies within a population over time is called what? Why does salt water makes cells shrink? What is Richard Feynman's invention? What happens every 365 days? What is the difference between clean and clean up? What is the difference between a newton and a kilogram? What safety rules should be followed in a science laboratory? Amy use 20N of force to push a lawn mower 10 meters. How much work does she do? Why do scientists use bat box? What is explanation in fals? What are the skin adaptations that make it an efficient human shield? What are all the colors known to man?