Which of the following can lower the level of frictional unemployment over time? Choose one or more:
A. stringent government labor-market regulations
B. an increase in the level of unemployment benefits
C. an increase in the number of online job search engines
D. reducing the regulations on hiring practices in a country

ans.

heterothermic organisms include those organisms that can switch between homeothermic (having body temperature higher than environment) and poikilothermic (having variation in internal body temperature) strategies.

some migratory birds show heterothermy as they decrease their metabolic rate during cold nights to keep their body temperature low. drop in metabolic rate allows increase in production efficiency of birds that reduces the internal body temperature to make it equal to external cold temperature during cold nights.

thus, the correct answer is 'birds allow their temperature drop in order to increase their production efficiency.'

answer; the cpi;

answersituation analysis;