James lives near a university and observes that almost every student uses a cell phone. he decides to open a small shop offering repair services for cell phones. his shop is an instant success. james has satisfied an area of need

An opportunity niche

Explanation:

 According to the given question, James open a small mobile repairing shop near the university and he is satisfied in an opportunity niche area.

As, the niche marketing is one of the opportunity that helps us providing the various types of products and the business services in the market. It is one of the target-able portion in the market as it focuses on the actual requirement of the customers.

 It also provide various types of benefits such as establishing large business, reducing the level of competition and reducing the competition in the market.

Therefore, An opportunity niche is the correct answer.  

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.'

answerall of the above;