Sometimes during wars, government expenditures are larger than normal. To reduce the effects this spending creates on interest rates, a. the Federal Reserve could increase the money supply by buying bonds. b. the Federal Reserve could decrease the money supply by selling bonds. c. the Federal Reserve could increase the money supply by selling bonds. d. the Federal Reserve could decrease the money supply by buying bonds.

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.'

answer production department;

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