question: OPTIONS:
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An example is the migration of continental populations of Swainson's thrush Catharus ustulatus, which fly far east across North America before turning south via Florida to reach northern South America; this route is believed to be the consequence of a range expansion that occurred about 10,000 years ago.
What percentage increase in flight distance will often be adaptive?

answer: no

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The term mechanical digestion refers to the physical breakdown of large pieces of food into smaller pieces which can subsequently be accessed by digestive enzymes.
What is mechanical digestion?

answer: yes

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The demonstration was led by Armenian writers such as Silva Kaputikian, Zori Balayan, and Maro Margarian and leaders from the National Survival organization.
How many people demonstrated?

answer: no

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This sequence of frames is called an elementary stream.
What is a sequence of MP3 frames called?

answer:
yes