The third whorl of an flower will be the stamen, the male reproductive part. The stamen is made of the thin vertical thread-like structure called a filament topped using a circular or oblong structure called an anther. The anther produces pollen, which could be the male contribution on the reproduction process in plants. Arthritis is more common among adults 65 and older, but it can affect people of all ages, including children. Rhinos existed back in prehistoric times and when flourished in thousands, moving into diverse habitats across Africa, Asia, Europe and North America. Today, due to poaching and habitat loss, few remain. Since 1970 alone, the rhinoceros population has declined by approximately 90 percent, in line with the American Wildlife Foundation. As of 2010, you can find five type of rhinos totaling approximately 24,500 within the wild and 1,250 in captivity, reports the International Union for Conservation of Nature (IUCN). The White Rhino is under threat of extinction and also the other four species are saved to the verge of extinction. The five remaining species are: So, if you want your husband or you to be always grinning from ear to ear try to get some great dose of coitus every night.