Suppose that a business incurred explicit costs of $1 million and implicit cost of $200,000 in a specific year. If the firm sold 4,000 units of its output at $300 per unit, its accounting profits were:

B. $200,000 and its economic profits were zero.

Explanation:

Given that

Total revenue = 4000 × 300 = 1200000

Explicit cost = 1000000

Implicit cost = 200000

Recall that

Accounting profit = total revenue - explicit cost

So,

Accounting profit = 1,200,000 - 1, 000,000

= $200,000

Again

Economic profit = Total revenue - ( explicit + implicit cost)

So,

Economic profits = 1,200,000 - ( 1,000,000 + 200,000)

= 1,200,000 - 1,200,000

= $0

So accounting profits of $200,000 and economic profit of $0.

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.'

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