A monopolist achieves the most profitable rate of output by applying which of the following rules? a. Average variable cost equals price.
b. Average total cost equals price.
c. Marginal revenue equals marginal cost.
d. Average total cost and average variable cost are both at a minimum.

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.'

c

explanation:

well obviously you must be dumb if you dont noe dat

answer; /// multipotentialite means a person who have many different interests and creative pursuits in life; (one true calling);

polymath; means a person   of wide-ranging knowledge or learning;

scanner; means; a device that captures images from photographic prints,posters,magazine pages.ect;

answer; rapid growth in buyer demand and high buyer switching cost;