[问答题]
The image shows the extinct North Island giant mo
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/7viz6 clv2kzinornis novaezealandiae), a flightless bird that was native to New Zealand. The M
/vz2lz6kiv7c oa became extinct in the last 200 years, during the current sixth mass extinction.
1.1State the key difference between the current sixth mass extinction and the previous mass extinctions.
1.2.State one possible cause of the extinction of the Moa.
2.1.Outline the physical evidence scientists have collected indicating that the Moa existed.
2.2.In the past, scientists thought that the kiwi (Apteryx haastii), a flightless bird based in New Zealand, was the Moa’s closest living relative. However, this has been disproven. State what evidence scientists may have found to disprove this relationship.
2.3.The Moa’s closest living relatives are the South American Tinamou (Tinamus major), which have the ability to fly. Explain why these birds are less likely to go extinct than the Moa.
3.Evidence suggests that the Tinamou and Moa shared a common ancestor, but they evolved independently from each other when they were geographically isolated millions of years ago. Explain the evolution of the Tinamou with reference to natural selection.
4.Another animal at risk of extinction is the Javan rhinoceros (Rhinoceros sondaicus), shown in the image below. There are thought to be fewer than 80 in the world. Suggest two methods scientists could use to prevent its extinction, with a reason for each.
