▶ Your Answer : The Lecturer argues that the fact that marsupials have disappeared in many parts on the planet is not because they have lack of ability to adapt to many environments. This directly contradicts the claim made in the reading that three pieces of evidence support the theory that the reason why marsupials are existing in limited places eventhough in the past, they had lived in various parts of the world. First, since marsupials have short-term conception periods, their babies born in immature state, and are grown in pouches of their mother. This makes their immunity stronger, and their mothers are more likely to stay healthy because during the pregmentation period, they are more vulnerable than they are not. This casts doubt on reading passage's claim that because they bear babies not yet having enough immunity to survive, they are more likely to die than other animals. On top of that, the lecturer cotends that marsupials can endure harsh environments, including too dry area to find edible things as well as the places in high temperature since they slowly convert food they ate into energy. This rebuts the reading passage's claim that with low metabolic rate, they can't live in cold places . Finally, the lecturer asserts that the reason why they come to live nearly limited areas is only that they have the conditions which they can survive better. He gives the case of Austrailia for example. Austrailia has dry and harsh conditions,which are suitable for marsupials to live, but, for other mammals, are not. This challenges the idea presented in the reading passage that the reason is the lack of ability to survive including being born with immature condition and being incapable of dealing with cold weather. |