In botany, chlorosis is a condition in which leaves produce insufficient chlorophyll. As chlorophyll is responsible for the green color of leaves, chlorotic leaves are pale, yellow, or yellow-white. ... Chlorosis is derived from the Greek khloros meaning 'greenish-yellow', 'pale green', 'pale', 'pallid', or 'fresh'.

Biological nitrogen fixation is the process of converting atmospheric nitrogen into ammonia by biological agents like bacteria, cyanobacteria, and archaea. Nitrogen is an essential element for the growth of all living organisms, but it is not readily available in the form of atmospheric nitrogen. Therefore, certain microorganisms have evolved the ability to convert atmospheric nitrogen into ammonia, a form of nitrogen that can be easily utilized by plants and other organisms.

Process of Biological Nitrogen Fixation:
The process of biological nitrogen fixation involves the following steps:

1. Nitrogenase Enzyme: The first step in biological nitrogen fixation is the production of nitrogenase enzyme by nitrogen-fixing bacteria, cyanobacteria, and archaea.

2. Conversion of N2 to NH3: The nitrogenase enzyme then converts atmospheric nitrogen (N2) into ammonia (NH3) by breaking the nitrogen triple bond and adding hydrogen ions (H+) to form NH3.

3. Incorporation of NH3 into Organic Molecules: The ammonia produced is then incorporated into organic molecules such as amino acids, nucleotides, and chlorophyll.

Significance of Biological Nitrogen Fixation:
Biological nitrogen fixation is an essential process for maintaining the nitrogen cycle in the environment. It plays a crucial role in the growth and productivity of agricultural crops and natural ecosystems. The following are the significance of biological nitrogen fixation:

1. Increases Soil Fertility: Biological nitrogen fixation helps to increase the fertility of the soil by providing a readily available source of nitrogen to plants.

2. Reduces Dependence on Fertilizers: Biological nitrogen fixation reduces the dependence on synthetic fertilizers, which are expensive and can have adverse effects on the environment.

3. Enhances Crop Productivity: Biological nitrogen fixation enhances the productivity of agricultural crops by providing nitrogen for plant growth.

4. Maintains Ecosystem Balance: Biological nitrogen fixation is essential for maintaining the balance of nitrogen in the environment and preventing nitrogen pollution.

Conclusion:
Biological nitrogen fixation is a vital process for maintaining the balance of nitrogen in the environment and supporting the growth and productivity of agricultural crops and natural ecosystems. It is a natural and sustainable alternative to synthetic fertilizers and plays a crucial role in maintaining the health of the planet.

The question should be added "by biological means".. Then the answer should it c