What is the tool scientist use to acquire knowledge in scientific method?

How many inches are there in 246 centimeters? What process uses enzymes to breakdown large molecules to smaller absorbable molecules? A wave that vibrates in a direction parallel to the direction of the wave itself is called a? What is the process that scientists called that scientists use to check others work? What is the difference between a country mile and a mile? How Reaching a conclusion by looking at several examples is called? Which is taller a 2350cm tree or a 24m building? What should be the size of a plane mirror to get a full size image of a person? How much trash do you throw away in a day? What are the formulas of the gases in in the air? What is the initial explanation for a phenomenon prior to experimentation is called a? Why should you not talk while your mouth is full? How are magnates made? What is the equivalent in miles for 250 meters? Why penny flattened by a hammer is a physical change? Why dont sparklers burn your clothes? How do you infer a statement? How much is 4 mph in km? Is the scientific method a definite and concrete set of rules? Does all matter have mass and takes up space?