The millard division's operating data for the past two years are provided below: year 1year 2 return on investment12%36% net operating income360,000 turnover3 margin sales3,200,000 millard division's margin in year 2 was 150% of the margin in year 1. the tumover for year i was: a) 3.0 b) 4.0 c) 1.5 d) 1.2

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.'

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