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).
Kangaroos are native to Australia alone-no other continent or island. Tree kangaroos can be found in New Guinea as well as in the far northern rainforests of Australia, but that is the only variety found anywhere else apart from Australia.Kangaroos' habitats include grasslands, mulga scrub, bushland (not too dense) and open plains-wherever there is food, and shade trees.ed Kangaroos do not live in sandy deserts because there is not enough food for them. They live in grasslands, bushland and other well-veg â¦ etated areas, as well as semi-arid areas where there is plenty of vegetation and permanent waterholes. Much of Australia's desert is not sandy desert.