Look at the four stars (*) that indicate where the following sentence could be added to the passage. 1* Strong evidence for this climate change theory comes from an excavation conducted in 2005 in a region of Australia called Darling Downs. A team of researchers excavated a creek bed, an area where many animal fossils are found. They dug down 10 meters deep and uncovered fossils from forty-four different species of animals. 2* These included giant marsupials, which carried their young in pouches, and are related to the kangaroos and wombats of today. 3* Researchers already knew that giant animals such as marsupials had disappeared. However, they were surprised to discover that smaller animal species, including those dependent on a wetter environment, had also become extinct. 4* The discovery of both small and large animals in the creek bedm suggests that the cause of the extinction of the giant animals was a massive shift in climate.