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Which of the following is a trace elemen...

Which of the following is a trace element required only in Small amounts by most living things

A

Oxygen

B

Iron

C

Nitrogen

D

Hydrogen

Text Solution

Verified by Experts

The correct Answer is:
b
Iron is component of haemoglobin of RBC of blood and helps in transportation of oxygen (about97-99%) as well as carabon dioxide (about23%)
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