A population of birds is found on a remote island. Which of the following information is most important in deciding if the birds all belong to a single species?
A) Whether the matings produce viable eggs or offspring of some matings are sterile
B) Whether they share many physical characteristics
C) Whether they mate with one another
D) Whether the males all sing similar songs
A
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(b) Average gradient of all second-order streams: __________ ft/mi
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A) Houston, TX B) Chicago, IL C) Los Angeles, CA D) Atlanta, GA
This country is the most densely populated country in the Latin American region
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