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).
1 Ratio in Australia of carnivores to herbivores such as the red kangaroo is low compared to North America (Calaby 1971). 2  Red kangaroos share habitats with eastern grey and western grey kangaroos in eastern New South Wales (Tyndale-Biscoe 2005).3  Studies of grazing competition between sheep and kangaroos (Edwards et al. Ratio in Australia of carnivores to herbivores such as the red kangaroo is low compared to North America (Calaby 1971). 2  Red kangaroos share habitats with eastern grey and western grey kangaroos in eastern New South Wales (Tyndale-Biscoe 2005). 3  Studies of grazing competition between sheep and kangaroos (Edwards et al.