What are the 3 scientific principles?

Which scientist worked in the field of pressure? Can a barometer be used as an altimeter? How do you prepare declaration of project work class 12th? What is the difference between stimulus generalization and response generalization? Why do particles have different amounts of kinetic energy? Air-cooled engines use what form of heat transfer to remove most of the heat from their cylinder head and cylinder? Question analysis has steps? What is the antonym for certain? In the context of filling out forms what does the term skimming refer to? What is the indepentent variable? How do systemic pesticides work to kill pests? How can finding out that a hypothesis is not true be useful for hypothesis? Which forms of energy are produced by a burning candle? What is the indication if segmenters got elevated in CBC lab result? How did the experiment test the hypothesis? How do you tell if your home heating system needs freeon? What are the characteristics of f plasmids? Is a toaster convection or conduction? What is something that is not useful? Difference between stroke and lawn culture?