How is weather different from climate?

How is weather different from climate? Explain the elements of weather and climate. Briefly describe the global climate groups (i.e, A, B, C, D, E, and H) based on the Koppen climate classification systems. Apply your knowledge of this system to describe the climate of the California Central Valley in terms of the temperature and precipitation pattern. Which other regions of the world experience the same climate type as in the Central Valley of California? Describe some of the hazards or environmental challenges associated with this climate.