Select the correct answer. What does a production possibilities curve represent?
ОА.
a combination of price and demand of goods and services
B.
a combination of the goods produced before and after a change in a factor of production
Ос.
a combination of two factors of production used to produce a single good or service
OD
a combination of two goods that can be produced using limited resources

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. money supply  

have a good day

answerproduct line length; product mix width;

it established new limitations on use and disclosure for marketing purposes, prohibited selling medical information, expanded individuals’ rights to accessing their own information, and to obtain restrictions from certain disclosures of protected heath information to health plans.