The fertile top soil can be removed by/soil erosion is due to
a. Over-cultivation b. Unrestricted grazing c. Afforestation d. Poor irrigation practices

Read the following statements carefully and select the incorrect ones. (i) Development of the fertile top-soil takes centuries, but it can be easily removed due to human activites such as over-cultivation, unrestricted grazing, etc. (ii) Waterlogging results in soil salinity. (iii) UV rays are responsible for degradation of ozone shield in atmosphere. (iv) Ozone present in troposphere acts as a shield abosrbing UV radiations coming from the Sun. (v) Global warming can be controlled by increasing the use of fossil fuels.

Read the following statements carefully and select the incorrect ones. (i) Development of the fertile top-soil takes centuries, but it can be easily removed due to human activites such as over-cultivation, unrestricted grazing, etc. (ii) Waterlogging results in soil salinity. (iii) UV rays are responsible for degradation of ozone shield in atmosphere. (iv) Ozone present in troposphere acts as a shield abosrbing UV radiations coming from the Sun. (v) Global warming can be controlled by increasing the use of fossil fuels.

From the statements given below identify the causes of soil erosion I.strong winds II.contour ploughing III.deforestation IV.step farming V.improper cultivation practices

Reduction is soil fertility due to erosion is an example of

Reduction is soil fertility due to erosion is an example of

Soil fertility can be maintained without addition of nutrients due to

Soil fertility can be maintained without addition of nutrients due to