EVERYDAY SCIENCE

Detailed explanation-1: -nitrogen fixation, any natural or industrial process that causes free nitrogen (N2), which is a relatively inert gas plentiful in air, to combine chemically with other elements to form more-reactive nitrogen compounds such as ammonia, nitrates, or nitrites.

Detailed explanation-2: -The process of combining nitrogen with other elements in order to make usable compounds is called nitrogen fixation. Most nitrogen is transformed into usable nitrogen compounds by nitrogen-fixing bacteria. Some nitrogen-fixing bacteria live in special swelling on the roots of legume plants.

Detailed explanation-3: -Fixation. Nitrogen in its gaseous form (N2) can’t be used by most living things. (Plants for example, do not have the required enzymes to make use of atmospheric nitrogen.) It has to be converted or ‘fixed’ to a more usable form through a process called fixation.