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Fossil evidence indicates that the Australian environment in the past supported a large and diverse range of megafauna - HSC - SSCE Biology - Question 6 - 2001 - Paper 1
Question 6
Fossil evidence indicates that the Australian environment in the past supported a large and diverse range of megafauna. The megafauna has now been displaced by a var... show full transcript
Worked Solution & Example Answer:Fossil evidence indicates that the Australian environment in the past supported a large and diverse range of megafauna - HSC - SSCE Biology - Question 6 - 2001 - Paper 1
Step 1
What is the best explanation?
Answer
The best explanation for the displacement of megafauna by smaller marsupials is (A) Smaller marsupials coped with climatic changes, and survived.
This option reflects the adaptability and resilience of smaller species in changing environmental conditions. Historical evidence suggests that during climatic shifts, smaller marsupials were better suited to survive the changes, potentially due to their reproductive strategies, dietary flexibility, and habitat use. Therefore, they thrived in the ecosystem as larger species faced challenges that led to their decline.