In the results of the survey of 200 Wendy's restaurants, exactly 8 customers used the drive-through at 27 Wendy's and exactly 9 customers used the drive-through at 21 Wendy's. Based on these values and your answers to question 2, does it appear that the advertising campaign increased customer use of the drive-through

oof

explanation:

f

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.'