What is reason for conducting an experiment?

What is the most common use of buttons? What does resource list mean in science fair? What is the shape of a liquid at its surface? What is supercaliafragilisticexpalladoshis? How did light and dark grey moths show natural selection? How can orange juice be sperated from alcohol by distillation? Are meters equal to miles or feet? Is Cameron Newton and Morgan Newton Brothers? What three things do you need to know to decide which placard if any you need? Is party a abstract or concrete? Give you examples of creative play for children? What is difference between OD and DO? What usually occurs inside a material instead of at the surface? Why might a scientist need to repeat a step i scientific methods? Name something that makes you squint? What are the skill you can develope in commercial? What principle formed the basis or Greek science? What is the theoretical background of measurement? Not every advance made in science leads to an advance in technology Why are these advances still valuable? Why do you think the lid lifts up?