Why are most finches which normally eat seeds unable to eat flower nectar like hummingbirds

1flowers in finches' environments do not produce nectar.
2most finches' beaks are too long and narrow to collect nectar.
3most finches' beaks are too short and broad to collect nectar.
4there are no flowers in finches' environments.

Which of the following is true? a. under the current unemployment insurance system, benefits replace about 90 percent of the typical worker's prior pretax earnings. b. high benefit payments to unemployed workers will tend to increase the rate of unemployment. c. if a system of personal savings accounts replaced the current unemployment benefit system, the unemployment rate would fall to zero. d. the rate of unemployment in the large european economies has been persistently lower than that of the united states due to their more generous unemployment benefits.