here are high-income countries that have a paper consumption rate between 250 and 375 pounds per capita per year. The percentage of high-income countries with a paper consumption rate higher than 500 pounds per capita per year is . Suppose you rank high-income countries according to their paper consumption. How specific can you be about the paper consumption rate of the middle two high-income countries in your ranking

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; charters;

answer casual models;