Question

select the correct answer from each drop - down menu.
this graph shows that bird ranges in the winter have been shifting northward over several decades.
change in latitude of bird center of abundance, 1966 - 2013
this movement of birds is called

. the change in the pattern of movement of birds suggests

Explanation:

The movement of birds shifting their ranges seasonally or over time to new geographic areas is defined as migration. Swarming refers to large groups moving together temporarily, and schooling is a term for fish group movement, not bird range shifts.

Answer:

migration