What must be based on many observations and supported by experimental results?

What is the advantages of anti sleep alarm for students? What is the term used to describe spread of unwanted microbes? What negative effect did the pencil bring? Which is the correct order for handwashing? What is the purpose of a flask? What material are board-shorts made of? What are classes divided into in science? How much is 20 degrees celsius mean in Fahrenheit? What are some precautions that cave divers take when diving into caves? What is 1cm-- mm? The practical use of scientific information is called what? What degree would an individual need for science employment? How did the dawes act affect the native americans? What is a conductors wand? What is the typical flue gas temperature of a category 3 furnace? What is 3 miles in meters? What is best universal indicator or litmus paper? What are Recycling analogy? Will a ceramic item contract if cold? What is cork and how it is use?