Each exam item (a question with its possible answers) has at least two references to standard books or other sources of project management. Most of the questions reference the PMI A Guide to the Project Management Body of Knowledge (aka the PMBOK Guide).
The Rite of Spring (Le Sacre du Printemps) is a ballet in two parts. The entire ballet was a concept developed by Igor Stravinsky. He wrote the music. The set and costumes were designed by Nicholas Roerich.
Spring is the season of new beginnings. Fresh buds bloom, animals awaken and the earth seems to come to life again. Farmers and gardeners plant their seeds and temperatures slowly rise. The timing of these changes varies depending upon location. What most people call spring relies on the astronomical definition of the word. Spring is generally considered the period between the spring equinox and the summer solstice. Defined by the angle of Earth's tilt toward the sun, astronomical spring relies on equinoxes and solstices to define it. Equinoxes are special days during the year when day and night are almost equal.