Tout corporation makes a product that has the following direct labor standards: standard direct labor-hours 0.1 hours per unit standard direct labor rate $22.00 per hour standard cost $2.20 per unit the company budgeted for production of 6,400 units in october, but actual production was 6,500 units. the company used 610 direct labor-hours to produce this output. the actual direct labor rate was $21.80 per hour. the labor efficiency variance for october is:

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.'