Information and IdeasHardInference about a hedgerow's age
Information and Ideas practice question
A rule used by naturalists says that a hedgerow gains roughly one new woody species per thirty-metre stretch every hundred years. The hedge along Long Lane has nine woody species in a thirty-metre stretch. By the rule, the hedge ____
Which choice most logically completes the text?
- A. is roughly nine hundred years old.Correct
- B. was planted about ninety years ago.
- C. contains no more than three species.
- D. is thirty metres long in total.
Answer: A. is roughly nine hundred years old.
One species per century; nine species.
Why the other answers are wrong
- B. was planted about ninety years ago.
- Ninety years would give about one species.
- C. contains no more than three species.
- Nine are counted.
- D. is thirty metres long in total.
- Thirty metres is the sample length.
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