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).
Nutrients 101: Essential and Non-Essential Nutrients Explained. Every day you consume food to nourish and fuel your body, as eating many different nutrients that are essential to maintaining optimal health. These are called essential nutrients and include vitamins, minerals, proteins, fats and carbohydrates.However, some nutrients are made in the human body, and these are called non-essential nutrients. Although termed non-essential, they are still required by the body for supporting daily bodily processes.itamins. Found in a variety of foods, especially vegetables and fruits and are key in helping the body make energy from food. 1  Vitamin A (beta-carotene, retinol). 2  Vitamin B1 (thiamin). 3  Vitamin B2 (riboflavin). 4  Vitamin B3 (niacin). 5  Vitamin B5 (pantothenic acid). 6  Vitamin B6 (pyridoxine). 7  Vitamin B7 (biotin).