PrepTest 108, Section 4, Question 5
Naturalists have long studied the ability of North(449 more words not shown)
The author cites all of(17 more words not shown)
- Athe kinglet's stomach(1 more words not shown)
- Bthe kinglet's relation(2 more words not shown)
- Cthe kinglet's limited(1 more words not shown)
- Dthe kinglet's small(2 more words not shown)
- Ethe kinglet's lack(3 more words not shown)
Reading the passage
We need the exception among the details that make survival puzzling. A detail can appear in the text and still have a different job. Ask whether each one makes it harder to explain how kinglets get through the night.
Working the answers
- A
A full stomach supplies only an hour's warmth. That blocks the simple explanation that one large meal could carry the bird through the whole night.
- BCorrect
The relationship to goldcrests provides a lead toward a solution. A study of those related birds may support the clustering idea. Being related to them isn't offered as a reason kinglet survival is difficult to explain.
- C
The insect-only diet is explicitly the second reason their survival is remarkable. The birds must find enough of that food during a short winter day.
- D
Their small mass contributes to rapid heat loss and leaves less insulation in absolute terms. That makes their high nighttime body temperature harder to account for.
- E
They don't forage at night, so they can't keep finding fresh food throughout the period when they need to stay warm. That adds to the feeding problem.
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