How can we know interest rates in our saving account?

Simple interest is money earned on the original amount of your deposit. It doesn't account for any interest you earn over time and will always be calculated based on your principal deposit, or the original amount of money deposited into your account, as long as you don't add to or subtract from the principal balance

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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