The second period, Mesolithic 2, is also called the Natufian culture. The change from Mesolithic 1 to Natufian culture can be dated more closely. The latest date from a Mesolithic 1 site in the Levant is 12,150 BCE. The earliest date from a Natufian site is 11,140 BCE.
Food. Milk, yogurt, and cheese are rich natural sources of calcium and are the major food contributors of this nutrient to people in the United States [ 1 ]. Nondairy sources include vegetables, such as Chinese cabbage, kale, and broccoli.Spinach provides calcium, but its bioavailability is poor.ood. Milk, yogurt, and cheese are rich natural sources of calcium and are the major food contributors of this nutrient to people in the United States [ 1 ]. Nondairy sources include vegetables, such as Chinese cabbage, kale, and broccoli.
Vegetables, especially leafy green vegetables, are the most nutrient-dense food source of calcium. The following are the calcium contents for 200 calories worth of common vegetables:n addition to the above mentioned dairy sources, powdered skim milk and pudding are also rich sources of calcium.   Another one of the most beneficial 3 food sources of calcium is fish. Sardines, tuna and salmon are considered to be rich in calcium and provide many health benefits.