Biology
Which of the following function is performed by the kidneys in the human body?

Transportation
Respiration
Excretion
Digestion

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Biology
Normal adult human male has

24 gram of haemoglobin/100 gram of blood
10 gram of haemoglobin/100 gram of blood
18 gram of haemoglobin/100 gram of blood
14 gram of haemoglobin/100 gram of blood

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