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.
Here are 5 of the best natural sources of calcium for healthy bones. Collard Greens. Leafy green vegetables are one of the most healthful sources of calcium and magnesium. One cup of boiled collards contains a whopping 358 milligrams. Kale, broccoli, Swiss chard, bok choy and turnip greens are full of calcium, too.