Exercise 1.7 questions 1-11

1. Australia has been an isolated continent for 50 million years. over that time the plants and animals have evolved separately from those in other parts of the world.
2. they have evolved.
3. belonging exclusively or confined to a particular place.
4.  89.
5. the great barrier reef, tropical rain forests of Queensland and and south west botanical province of western Australia. 
6. Australia. 
7. Koalas. pouched mammals. 
8. platypus. monotremes are mammals that lay eggs. 
9. a wallaby is slightly smaller than a kangaroo. 
10. the duck-billed platypus is about 50 cm  long and it weighs around 1-2 kg. they have a duck like bill, which allows them to breathe underwater. they also have webbed feet which allow them to swim underwater. 
11. the bottle brush plant: the bottle brush plant is the most densely populated plant in Australia. Hardy with tough leaves, often with paper bark, Flowers produced in dense spikes at the end of the branches. The stamens are the most conspicuous part of the flower and are in colours of green, yellow, white and various shades of red and violet. Varying in size from 5 feet shrubs to small trees. They belong to the genus Myrtaceae, and there are 34 species of them in Australia.