Question

Soil erosion can be prevented by
(a) Restricted human activity
(b) Good plant cover
(c) Checking movement of animals
(d) Windscreen alone

Answer 1

Erosion occurs when farming practices aren't compatible with the very fact that soil is often washed away or blown away. These practices include overstocking and overgrazing, inappropriate farming techniques, lack of crop rotation, planting crops down the contour rather than along it.

Complete step by step answer:
Soil erosion is the detachment transport and deposition of soil particles ashore surface which is additionally termed as a loss of soil and measured as mass per unit area. Erosion is caused by human activities like overcropping, overgrazing and deforestation.

So, the right answer is ‘(a) Restriction human activity’.

Additional Information: Types of soil erosion:
Sheet erosion: Sheet erosion is the removal of the skinny layer of topsoil by raindrop splash or water run- off.
Gully erosion- In gully erosion, the surface run- off is extremely high. These resemble large ditches or small valleys.
Rill erosion If sheet erosion occurs with full force, the runoff water moves rapidly over the soil surface which cuts a well-defined finger-shaped groove-like structure. It appears as thin channels or streams.
Streambank erosion: The rivers during floods splash their water against the blanks. During this way, the water cuts through them. Particularly at curves, water strikes with great speed and therefore the bank caves in alongside. This is often also referred to as riparian erosion.

Note: Prevention of soil erosion:
- Crop rotation: it's the tactic of growing a series of dissimilar crops in a neighbourhood sequentially. The various crops are grown within the same area by rotation. That's one after another which helps in the improvement of soil structure and fertility.
- Afforestation: confirm that there are always plants growing on the soil, which the soil is rich in hummus. Allowing indigenous plants to grow along riverbanks. Planting windbreaks are often effective.