An environmentally friendly 2,800-square-foot green home (99% air tight) costs about 88% more to construct than a same-sized conventional home. most green homes can save 14% per year on energy expenses to heat and cool the living space. for a $237,000 conventional home with a heating and cooling bill of $2,500 per year, how much would have to be saved in energy expenses per year to justify this home (i. e., b-c ratio greater than or equal to one)? the discount rate is 8% per year, and the expected life of the home is 30 years.

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.'

107x106 is the answer

answer; schedule c;

answerreactive approach;