Some bird species have not adapted to the tundra’s harsh environment, so they . A leave for the summer and come back in fall
B leave for the winter and come back in spring
C burrow under the soil during the winter
D never fly above the Arctic Circle or below the Antarctic Circle

a adaptation is when organism changes itself to fit the environment

ex. when its cold outside i wear a jacket

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a time line cause it goes from 685 to 978

the answer is: trichonympha lives in the gut of termites and digests cellulose eaten by the termite.

this is an example of a symbiotic association of a protozoan with its mode of association.

hope i

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