Which of the following indicates a decrease in the entire supply curve (S) to (S2)? A. A shift of the entire curve up.
B. A shift of the entire curve to the left.
C. A shift of the entire curve to the right.
D. A new price point along the curve.

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.'

you're crazy if you think that someone is going to write a 500 word report for you.

b. take periodic breaks and alternate between tasks.  

will increase work efficiency, and avoid health issues.