Which form of marketing do firms employ when they target a segment of customers who already use the kind of products they offer? When firms target a segment of customers who already use the kind of products they offer, they exhibit marketing.

Using different types of market segmentation allows you to target customers based on unique characteristics, create more effective marketing campaigns, and find opportunities in your market.

answer; is usually (less than) the socially optimal level of consumption;

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.'