Suppose that the price of a bagel is $1.50 each. Leo is willing to pay $4.50 for a bagel. Isa is willing to pay $2.80 for a bagel. Angelica is willing to pay $1.50 for a bagel. Brian is willing to pay $1.20 for a bagel. Ramiro is willing to pay $0.75 for a bagel. What is the total consumer surplus from the consumption of bagels?
a) $0.25
b) -$1.05
c) $1.30
d) $4.30
e) $7.75

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.'

answer; someone must cover the cost associated with the provision of scarce goods in both sectors;