For each form of private spending, indicate whether it represents consumption or investment. Private Spending Consumption Investment Laundromats buying washing machines People buying washing machines Firms buying automobiles for delivery services Firms buying soft drinks for a holiday party For each form of government spending, indicate whether it represents consumption or investment. Government Spending Consumption Investment Building public housing Paying workers to administer government programs Building hospitals Buying military equipment

Private Spending:  

Government Spending:  

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.'