Match List I with List II

List I	List II
A. Gleization	I. Desilication
B. Laterization	II. Process of decomposition of organic matter
C. Humification	III. Concretions of Fe & Mn
D. Podzolization	IV. Removal of oxides of Fe & Al

Choose the correct answer from the options given below:

Correct option is A

The correct answer is (A) A-III, B-I, C-II, D-IV

Explanation:
• Gleization (A-III): Occurs in waterlogged, anaerobic conditions. It results in the reduction of Iron ($Fe$) and Manganese ($Mn$), often forming mottled concretions or a bluish-gray soil color.
• Laterization (B-I): Predominant in humid tropics. It involves the leaching of silica (Desilication), leaving the soil rich in Iron and Aluminum oxides (Sesquioxides).
• Humification (C-II): The biological process of decomposition of organic matter (plant and animal residues) into a stable, dark-colored substance called humus.
• Podzolization (D-IV): Occurs in cool, moist climates under coniferous forests. It involves the removal of oxides of Iron and Aluminum (and humus) from the A-horizon and their deposition in the B-horizon, leaving a bleached, silica-rich E-horizon.

Information Booster:
• These are "Pedogenic Processes" that lead to the development of specific soil profiles.
• Calcification: The accumulation of calcium carbonate in the soil profile, common in arid regions.
• Salinization: The accumulation of soluble salts in the soil.

Additional Knowledge:
• Desilication: The opposite of podzolization; in laterization, silica is removed while iron/aluminum stay. In podzolization, iron/aluminum are removed while silica stays.