Biology 1st Edition by Jerome Krueger, Kendra Hill, Robert Noyd

تمرين 13

It is likely that habitat fragmentation has lowered populations of migratory songbirds in the United States because:
A) the remaining habitat patches likely lack food to sustain bird populations.
B) the pairs of breeding birds cannot easily move from one habitat patch to another.
C) small patches lack enough ecotone to support bird populations.
D) female birds are unable to locate mates in small habitat patches.