Ecologist Dr. Sarah Lee argues that invasive species can sometimes benefit ecosystems by filling ecological niches left empty by extinct native species.
6
readingWhich ecological case study would best support Lee's beneficial invasive claim?
A
Some invasive species spread rapidly
B
Native species have declined
C
Invasive species are common
D
Introduced tortoises in Mauritius now disperse seeds that were previously spread by extinct giant tortoises, restoring critical ecosystem functions and enabling native plant reproduction to recover
Correct Answer: D
Choice D is the best answer. Specific niche replacement + measurable ecological function restored proves benefit.
💡 Strategy: Counter-conventional claims need documented positive mechanisms.