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.
Definition: A hazelnut is a type of tree nut similar to a filbert. The word hazelnut is sometimes used interchangeably with the word filbert, and they are related, but the two grow on trees of different species.Moreover, there are certain types of hazelnuts that are actually hybrids of filberts and hazelnuts.ike filberts, hazelnuts can be eaten raw or roasted. Hazelnuts have a hard exterior shell, and the nuts themselves have an outer skin which can have a bitter flavor. This outer skin on the hazelnut can removed by blanching the nut. Also Known As: 1  Filbert.