Degradation by Improper Resource Utilisation and Maintenance

Which of the following pollutant accumulates in the bones, replaces calcium and may cause bone cancer?

Overcultivation and unrestricted grazing are examples of

The pesticide used as preventive measure in buildings is

Give an example of degradation by improper resource utilization and maintenance.

India has 6 million hectares of _____ land.

The pesticide most persistent in the soil is
 

Cotyledons are also called-

Which of the following is related to integrated waste water treatment process within a natural system?

Crop rotation refers to the practice of cultivating

Rotation of crop is essential for