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.
Kangaroos are large marsupials that are found only in Australia. They are identified by their muscular tails, strong back legs, large feet, short fur and long, pointed ears.angaroos are the only large animals that hop as a primary means of locomotion. Their springy hind legs and feet are much stronger and larger than their arms (or forelimbs). According to the San Diego Zoo, kangaroos can cover 15 feet (7 m) in a single hop and can hop as fast as 30 mph (48 kph).
There are about 60 species of Kangaroo in Australia which are unique to Australia. There are several species of Tree Kangaroo which are native to New Guinea and parts of Indonesia.owever, the tree kangaroos are also native to New Guinea and limited islands of In â¦ donesia. Kangaroos live almost exclusively in Australia, with some living only in some parts of Papua New Guinea. Kangaroos can live in arid or cold conditions, in rain forests or deserts.