Suppose Sean and Yvette are playing a game in which both must simultaneously choose the action Left or Right. The payoff matrix that follows shows the payoff each person will earn as a function of both of their choices. For example, the lower-right cell shows that if Sean chooses Right and Yvette chooses Right, Sean will receive a payoff of 3 and Yvette will receive a payoff of 7. Yvette Yvette
Left Right
Sean Left 4,6 6,8
Sean Right 7,5 3,7
The only dominant strategy in this game is for to choose .
The outcome reflecting the unique Nash equilibrium in this game is as follows:
Sean chooses and Yvette chooses .

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.'

a. primarily outdoors, responding to emergencies and protecting people.

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