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.
Kangaroos are native to the continent of Australia.   Tree-kangaroos are also found on the island of New Guinea and some  Indonesian islands, but these are not part of th â¦ e continent of  Australia.2 people found this useful.angaroos are native to the continent of Australia.   Tree-kangaroos are also found on the island of New Guinea and some  Indonesian islands, but these are not part of th â¦ e continent of  Australia. 2 people found this useful.