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Studentka2010 [4]
3 years ago
14

The minimum number of American bird species known to have precise migration instincts is:

Geography
1 answer:
zalisa [80]3 years ago
7 0
Option b. 100+

Some birds are nomadic in winter, others spend the colder months in the southwestern part of the continent or in the Mediterranean region. Geographical conditions determine several main routes. The Alps are an important barrier to migratory birds. About 150 travel westward and southwestward; others travel southeastward.
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