unit:10 whose

1 Marsupial are animals …………….. young are carried in a pounch.



2  David Attenborough is a naturalist ………….. films have been seen all over the world.



3  An ornithologist …………………. is a person who studies birds.



4  Mammals are animals ……………. babies are born fully- formed rather than in eggs.



5  Crocodiles and lizards …………………… are related to the dinosaurs, which lived millions of years ago.



6  Another person ………….. work has become well known is Roger Fouts.



7  Fouts, who has studies the behaviour of other animals, taught ………………… chimpanzee sign- language.



8  The chimpanzee, ………………… name was Washoe, learned about 160 signs.



9  Whales and dolphins both make sounds which in some ways …………………… are similar to a language.