How do principles and elements of art help in creating artworks?

In what ways does a cell function like a small city or factory

Who was pink floyd? i need answer for assignment answer who he was and three songs he sang.

Spencer's blog claims that national parks are the best vacation destinations. which evidence is best for developing his claim? a personal account from a park visitor who describes positive adventures at grand canyon and yellowstone parks an interview with a travel agent who advertises cruises, eco-tours, and whitewater rafting trips a chart that compares the number of national parks in the eastern united states to that in the western states a study that proves adults who take yearly vacations have lower blood pressure than those who do not