If pills are taken every day at the same time, and each pack is started on time, oral contraceptives are 99% effective in preventing pregnancy. On average, oral contraceptives are 93-97% effective because women often miss pills or do not start a new pack on time.
A kangaroo is an animal found only in Australia, although it has a smaller relative, called a wallaby, which lives on the Australian island of Tasmania and also in New Guinea.Kangaroos eat grass and plants. They have short front legs, but very long, and very strong back legs and a tail. kangaroo is an animal found only in Australia, although it has a smaller relative, called a wallaby, which lives on the Australian island of Tasmania and also in New Guinea.
Large Kangaroos. There are 6 species of large kangaroo, the red kangaroo being the most common, as well as being the only one that is restricted to the arid zone, inhabiting the better watered plains and low open woodlands, with its heartland in western New South Wales.n this part of its range there are 2 closely related species, the antilopine wallaroo and the black wallaroo. It is believed the populations of the euros and wallaroos are probably similar to that of red kangaroo, though they haven't been estimated (Edwards, 1989).