What the treotyping?

What are the common laboratory rules when conducting an experiment? Can you use regular stamps on first class mail? Why doesn't my hot warter work in my bathtub but works everywhere else? Explain with examples the term plug and play and give the features it incorporate? What would not be considered as one of the steps in the evolutionary process? What happens when light strikes a opaque object? Forming a hypothesis is accomplished through reasoning.? What is difference between argument and option? What are the two ways pushrods can be checked for straightness? Who discovered the law of motion and the law of universal gravitation? What is a science book? Does a photographer use a tripod? What is a dickfer? How do you turn on a microwave? 80 centimeters equal how many inches? Who created the human race? How does light make shadows? Does a football sink in seawater? What field of science is a battery? Why is it important to conduct scientific test than one time?