Draw an indifference curve that shows the diminishing marginal rate of substitution. Label it IC. Draw a point on the indifference curve and label it A. Draw a line the slope of which shows the marginal rate of substitution at point A.

Answer & Explanation :

Indifference Curve is a graph showing product combinations, that give consumer the same level of satisfaction.

It is a downward sloping curve, as remaining at same level of satisfaction - if consumption of one good increase, consumption of other good decrease & vice versa.So, the two goods are inversely related and the curve downward sloping

The curve is also concave i.e inwards bowing towards origin. This is because of increasing Marginal Rate of Substitution. MRS is ratio of good sacrifised to gain an additional unit of other good, staying at same satisfaction level & same indifference curve. MRS is slope of IC ; it is decreasing because - as consumer gains more & more of a good, he/ she is willing to sacrifise lesser & lesser amount of the sacrifised good each successive time.

a ab

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.'