1 The Depo-ProveraÂ® shot is very effective in preventing pregnancy. 2  It is important to get your shot every 13 weeks (3 months).  Periods can be heavier initially, and then lighter, or absent while on Depo-ProveraÂ®.
there are three animals close to being extinct wich are the polar bears, tigers and dolphins but dolphins are probably the closest one to becoming extinct. hope we ansered you â¦ r question. Jake Wayne
Top 10 most endangered species in the world. The tiger has topped the World Wide Fund for Nature's list of species most at threat of extinction. Below is the full list of creatures most under threat, according to the WWF. 1. New studies indicate that there may be as few as 3,200 tigers (Panthera tigris) left in the wild.