Right now the background extinction rate is about what it normally has been historically through geologic time. True or False?
A) True. It's quite constant over time.
B) False. It's somewhat lower now than has been typical.
C) Can't tell. We weren't around early on so we have no way of knowing.
D) False. It's much higher now than has been typical.
E) True. It looks like it, but we monitor species so much better now, we might just be seeing more species.
Correct Answer:
Verified
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