How is the universe organized into systems and galaxies, and how can we tell the difference between galaxies?

Why does c. wright mills identify critical thinking as one of the most important criteria for the development of intellectual craftsmanship? why is constantly being aware of the biased nature of your reactions and interactions (what c. wright mills calls self-reflexive) key to the development of that critical thinking? finally, why is keeping a file important, how can it lean to intellectual curiosity which can foster critical thinking and to develop a keen analytical mind?

Which term describes a possible explanation of, or answer to, a scientific question that is based on prior knowledge or research and that is testable?

An refers to a specific factor that has a range of possible values