According to a recent study (based on the 2010 world population of 6.9 billion) by The Pew Forum, there are: 1  2,173,180,000 Christians (31% of world population), of which 50% are Catholic, 37% Protestant, 12% Orthodox, and 1% other. 2  1,598,510,000 Muslims (23%), of which 87-90% are Sunnis, 10-13% Shia.
Look for the distinctive male Hazelnut flowers, called catkins, which look like 2-inch to 3-inch long yellow or brown growths at the end of the tree branches. The male flowers grow in clusters of two to three and typically form in the winter months. 1  6.
However, it is considered as an eye color which displays a combination of greens, browns, and blues. 2. Hazel Eyes Brown Ring. Research says that 74% of hazel eyes appear to have a brown ring around the pupil. 3. Every pair of hazel eye color is unique. One pair of hazel eyes is never identical to another personâs pair of hazel eyes. Some people possess lighter features of green while others have darker features of brown. The color of the tinges as well as the ring around the pupil may also vary.