__________ soil is usually grey or red in colour.
Topsoil
Subsoil
Porous
None of these
_______________ means the process of supplying water to an area of land under cultivation.
Irrigation
Porosity
Vegetation
Rotation of crops
The spaces between the particles of soil is _________.
Holes
Tissues
Pores
______________ is rich in minerals and is very fertile.
Alluvial soil
Black soil
Desert soil
Red soil
The ability of a soil to absorb water is known as ______.
Retention of water
Soil percolation
The nutrients of the soil ___________________ after crops are grown in it year after year.
Increases
Decreases
Not change
Red soil is red in colour due to the high content of __________ in it
Red things
Iron
Magnesium
Copper
The topmost layer of the soil is called___________.
Non-porous
______________ soil is red in colour.
The property of a soil which allows air and water to pass through is called______.
Rentention
Percolation
