Write an inquisitive question about a specific text span in a given sentence such that the answer is not in the text.

Sentence: But these lowly sea urchins adapt so quickly they ’ re helping answer a question that ’ s key to understanding ocean acidification :  As fossil - fuel emissions disrupt marine life , will evolution come to the rescue ?<sep>Span: ocean acidification :
What is ocean acidification?

Sentence: Conflicting age estimates for certain rocks differ by up to 4 billion years — the vast majority of Mars ’ planetary existence .<sep>Span: Conflicting age estimates
Why are they unable to agree on the ages?

Sentence: New attempts to answer the question suggest that in order to halt the calamitous chain of transmission at least 50 percent of all infectious Ebola patients in West Africa — and perhaps 70 percent — would need to be isolated and kept from infecting other individuals .<sep>Span: perhaps 70 percent

Wouldn't the other 30% of patients continue spreading the virus?

