A firm currently has the following production and input price situation with respect to two types of labor (L1 and L2) which can be imperfectly substituted for one another: MPL1 = 10; PL1 =15; MPL2 =4; PL2 = 2. The firm is operating in the second stage of the production function with respect to each type of labor. If the firm wishes to minimize cost for the current output, it should: A. Make no change.
B. Increase L1 and decrease L2.
C. Increase L2 and decrease L1.
D. Increase both inputs.
E. Decrease both inputs.

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.'

1) the stages a new product goes through from beginning to end, i.e., the stages that a product passes through from introduction through growth, maturity, and decline. 2) the time from initial research and development to the time at which sales and support of the product to customers are withdrawn. 3) the period of time during which a product can be produced and marketed profitably.

                                          hope it

answer; ///hong kong;