1.

Observe the table given below and answer the questions.Name of the animalWeight of the  bodyWeight of the heartHeart beat per minuteBlue whale 1,50,000 kgs750 kgs7Elephant 3,000 kgs12-21 kgs 46Man60 – 70 kgs 300 grams76Koaltit 8 grams 0.15 grams1200Why is the weight of heart less than body weight ?

Answer»

The pumping device heart has to perform only circulation of bodily fluids in the body.



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