During its most recent fiscal year, Raphael Enterprises sold 360,000 electric screwdrivers at a price of $19.80 each. Fixed costs amounted to $1,296,000 and pretax income was $1,656,000. What amount should have been reported as variable costs in the company's contribution margin income statement for the year in question

how does that happen,where u steel points

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.'

c is the correct answer.