What is necessary for vaporization?

What is vaporization?

Which of the following is necessary for iron absorption?

Which mineral is necessary for melanin formation?

State whether True or False:- A woulfe bottle is necessary for prepartion of hydrogen.

Frequency density is necessary for drawing

Which mineral is necessary for the activation of arginase enzyme -

Which mineral is necessary for blood cloating

What are the conditions necessary for fixation of atmospheric nitrogen by Rhizobium. What is their role in N_(2) -fixation?

What are the conditions necessary for fixation of atmospheric nitrogen by Rhizobium? What is their role in N_2 - fixation?

Iodine is necessary for the production of -