Tag: the soil

• Surface texture is the best key to wind erosion protection. Very fine soil particles are carried high into the air by the wind and transported great distances (suspension). 
• Fine-to-medium size soil particles are lifted a short distance into the air and drop back to the soil surface, damaging crops and dislodging more soil (saltation). 
• Larger-sized soil particles that are too large to be lifted off the ground are dislodged by the wind and roll along the soil surface (surface creep). The abrasion that results from windblown particles breaks down stable surface aggregates and further increases the soil erodibility.

Water erosion is when the flowing water carries away the soil with it.This amounts for the largest amount of soil erosion. Wind erosion is when the blowing wind carries the soil with it. physical degradation is a gradual process of many steps beginning from structural deterioration and ending in the differential loss of finer particles through erosion. Physical degradation is a gradual process in which the soil is broken down into finer particles. Chemical degradation mainly consists of soil pollution and acidification. Thus the correct answer is option A.

Soil erosion is the process of wearing of upper layer of soil by the natural physical forces such as water and wind or by farming activities. Water erosion and wind erosion are the two major physical forces which play an important role in soil erosion. The farming activities include chemical and physical degradation. Use of pesticides leads to soil erosion. Physical degradation such as cutting of trees leads to soil erosion.

The water cycle also known as the hydrological cycle describes the continues movement of water on, above and below the surface of the earth. Although the balance of water on Earth remains fairly constant over time, individual water molecules can come and go, in and out of the atmosphere. In doing so, the water goes through different phase liquid, solid (ice) and gas (vapor).

A dendritic drainage pattern is the most common form and looks like the branching pattern of tree roots. It develops in regions underlain by homogeneous material. That is, the subsurface geology has a similar resistance to weathering so there is no apparent control over the direction the tributaries take.

It is a drainage pattern in which consequent streams radiate or diverge outward, like the spokes of a wheel, from a high central area; it is best developed on the slopes of a young, unbreached dome like structure or of a volcanic cone.

The Ganges-Brahmaputra Delta (also known as the Brahmaputra Delta, the Sundarbans Delta or the Bengal Delta) is a river delta in the Bengal region of the Indian subcontinent, consisting of Bangladesh and the Indian state of West Bengal.