Answer: Psocoptera are an order of insects that are commonly known as booklice, barklice or barkflies. They first appeared in the Permian period, 295-248 million years ago. Booklice are wingless and range from approximately 1mm to 2mm in length (1/25" to 1/13"). They are easily mistaken for bedbug nymphs and vice-versa. Booklouse eggs take 2 to 4 weeks to hatch and can reach adulthood approximately 2 months later. Adult booklice can live for six months. Besides damaging books, they also sometimes infest food storage areas, where they feed on dry, starchy materials. They are scavengers and do not bite humans.
Answer: Birch Bark canoes are white on the outside with specks of black. They also can have carvings to represent a certain tribe. On the inside they are a tan or a light brown with carved stripes. It may have a rope on the edge too.
Answer: Dysmenorrhea is a type of excessive pain that occurs duringmenstruation. Though dysmenorrhea happens most often as a result ofthe menstrual cycle, a secondary common cause is endometriosiswhich affects the lining of the uterine cavity. Other lesser commoncauses of dysmenorrhea are leiomyoma, adenomyosis, ovarian cysts,and pelvic congestion.
Answer: Sometimes when the egg bursts out of the ovary during ovulation this can cause cramp like feelingings, usually just on one side.Painful periods, or dysmenorrhea (say: dis-men-oh-ree-ah), are not usually serious. However, sometimes painful periods can be caused by an infection or by ovarian cysts (fluid-filled sacs in the ovary). Pain also can be caused by endometriosis (say: en-doe-me-tree-oh-sis). This is a problem with the lining of the uterus.If you are concerned I would recommend a visit to your OB/GYN Doctor. Dysmenorrhea means painful menstruation.
Answer: The Basenji, an African hunting dog, is the only dog that cannot bark. This trait is probably due to the shallow laryngeal ventricle in its larynx. However, the Basenji is certainly not silent and can make a wide variety of other dog noises as well as a unique yodelling sound. One of the most ancient breeds of dogs, Basenjis were once feared extinct until they were rediscovered living among the Azande and Mangbetu tribes from the northeastern Congo region of Africa in 1895.Personality: Cheerful, affectionate, patient with children. It is an extremely clean dog without even a hint of bad odor with a quality rare among dogs: it does not bark!Contributed by the Educational Staff at http://www.bargainbuypetsupply.com