State the conditions necessary for nuclear fusion ?

Write the important conditions necessary for linear combination of atomic orbitals.

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

What is nuclear fusion ? Write the conditions for nuclear fusion to occur.

Oxygen is necessary for -

State the conditions under which a force does no work .

The basic conditions necessary for the germination of seeds are

State any two conditions essential for being free of disease.