Entrepreneurs are usually self-motivated and self-confident and they love a challenge. would you describe yourself this way?

Yes the statement is True.

Explanation:

Entrepreneurs are people who start their own business, bear all cost of setting up the business in the hope of getting profits out of it. Starting a new business by a single person on his own is such a big decision. Such decisions need high confidence and courage. Also higher level of motivation is also needed, because if the person who is starting a new business is not motivated enough, he won't be able to proceed further in his business if any obstacle comes in the way. So this is so true that Entrepreneurs are self motivated and self confident and they love challenges.  

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.'