State D.
Planting trees helps in checking of soil erosion.
2. Land use has not changed over the period of time.
3. Landslide does not affect the road and rail communication.
To conserve the land, we need to regulate the use of chemical pesticides.
5. Soil formation is not affected by organic material. (F)
6. Soil can be formed within a few years.
7. Subsoil consists of unweathered rocks.
8. Alluvial soil is found in deserts.

a mid-ocean ridge or mid-oceanic ridge is an underwater mountain range, formed by plate tectonics. this uplifting of the ocean floor occurs when convection currents rise in the mantle beneath the oceanic crust and create magma where two tectonic plates meet at a divergent boundary.a geomagnetic reversal is a change in a planet's magnetic field such that the positions of magnetic north and magnetic south are interchanged.

it analyzes spatial location and organizes layers of information into visualizations using maps and 3d scenes. ​with this unique capability, gis reveals deeper insights into data, such as patterns, relationships, and situations— users make smarter decisions.

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