Thyimach, a machinery manufacturing company, has been purchasing iron shafts from metaljun, a supplier of iron and steel materials, for over a decade. when thyimach designs new models of machinery, metaljun manufactures shafts with new specifications without asking for advance payments. thyimach, in turn, uses only metaljun's materials to manufacture its machinery. in the context of the supplier component of a specific environment, this scenario best illustrates between thyimach and metaljun.

Relationship Behavior

Explanation: Thyimach, has been purchasing iron shafts from Metaljun for over a decade. There is a relationship of buyer and supplier developed among both of them. When Thyimach designs new model of machine Metaljun provides with new specification without informing Thyimach and Thyimach uses Metajun's supplies only. So this is a case of relationship behavior. Since the relationship was strong, Thyimach also didn't mind using the product and Metaljun knew it wouldn't be a loss for him.

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.'