Discussion
Why are homo sapiens the most significant driver of change in the environment of the entire planet?
Answer: C
Homo sapiens are the most significant driver of change because they have been able to drastically alter the ecosystem. The passage says that within the past 70,000 years this one ape species has altered the world's ecosystem and surpassed natural forces. Being the strongest creature, being able to think, or the absence of a calamity are not given as the reasons. The passage says that Homo sapiens has drastically changed the ecosystem and that no other single species had done this in four billion years, while earlier changes came from climate, plate movement, volcanoes and asteroids, so option C states the reason.
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