Carolyn is trying to identify the work performed and the working conditions of a research analyst at acme global. since so much of the work is done inside the analyst's head, she cannot observe it. she would like to get an account of what the analyst does hour by hour. in this case, the job analysis method would be most appropriate.

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.'