Biology
The main function of the inner bark of a woody plant is to

Protect the plant from herbivorous animals
Act as a membrane impermeable to water and gas
Transport minerals and water from the roots to the leaves
Transport food from the leaves to the other parts of the plant

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Biology
Normal adult human male has

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

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