Recognition of revenue in accrual accounting requires: Multiple Choice only that the amount of cash to be received from the sale of a product or service be known. only that a product be delivered or a service be performed. that the revenue be realized or realizable, and earned. that cash be received.

answer; /// the above statement is (true);

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; lags, push the econ below the natural level of output;