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
Why It Matters When Species Go Extinct. Animal extinction can effect entire ecosystems and in turn the world. Javan rhinos are the most threatened of the five rhino species, with only 60 individuals surviving in Ujung Kulon National Park in Java, Indonesia.