Climate and Seasons. Arizona's climate varies widely by altitude. Southern Arizona, including Phoenix and Tucson, has very hot summers and mild winters, with cooler summertime temperatures in the Chiricahua Mountains in the southeast corner of the state. Best times to visit are fall, late winter and early spring or higher elevations in summer. Northern Arizona, including Flagstaff, Sedona and the Grand Canyon, has four seasons but weather is mild enough to visit any time. Topography. Arizona covers 113,909 square miles, with about 350 square miles of water surface.
The staple food in different parts of the world is a function of weather patterns, local terrain, farming constraints, acquired tastes and ecosystems. For example, the main energy source staples in the average African diet are cereals (46 percent), roots and tubers (20 percent) and animal products (7 percent).
over 55 years. Building Blocks of Nutrition: Fats, Lipids and Oils Share Elson Haas M. MD Â© Classification and Biochemistry Digestion and Metabolism Functions Requirements, Deficiency, and Excess Dietary Fat and Disease Fats, or lipids, are the third main class of the macronutrients needed in human nutrition.The lipids are found primarily in meats and dairy foods, at least, these are the most visible sources, but most foods contain some fat.Some of the richer vegetable sources of dietary fat are nuts and seeds, soybeans, olives, peanuts, and avocados, and these contain the needed or essential fatty acids (EFAs).Fats are an important component of our diet, and at least a minimum intake is essential.ats are important in transporting other nutrients, such as vitamins A, D, E, and Kâthe âfat-soluble vitamins.â Fats are also an essential component of the cell membrane, and internal fatty tissues protect the vital organs from trauma and temperature change by providing padding and insulation.