A. Stone
B. Soil
C. Rock
D. Silt
Submitted by: Shafiq Rehman
Author: Shafiq-ur-Rehman
A. Soil Quality
B. Soil Pollution
C. Soil Salinity
D. None of these
Submitted by: Shafiq Rehman
A. Pollution runs-off into rivers & kills the fish, plant & other aquatic life
B. Crops & fodder grown on polluted soil may pass the pollutants on to the consumers
C. Soil structure is damaged or polluted soil may no longer grow crops & fodder
D. All of the above
Submitted by: Shafiq Rehman
A. Insecticides—Herbicides
B. Fungicides—Insecticides
C. Weedicides—insecticides
D. None of the above
Submitted by: Shafiq Rehman
A. Arsenic & Cadmium
B. Mercury & chromium
C. Calcium & Magnesium
D. Both A & B
Submitted by: Shafiq Rehman
A. Lead
B. Fluorine
C. Nickle
D. All of the above
Submitted by: Shafiq Rehman
A. Acid rain
B. Neutral rain
C. Both A & B
D. None of the above
Submitted by: Shafiq Rehman
A. Sunlight
B. Chlorophyll
C. Water & plant nutrients
D. All of the above
Submitted by: Shafiq Rehman
A. Potash
B. Nitrogen
C. Calcium
D. Both a & c
Submitted by: Shafiq Rehman
A. The plant absorbs carbon as carbondioxides directly from the atmosphere.
B. Water is the source of hydrogen
C. Air & water is the source of oxygen & the chief source of soil nitrogen is organic matter & when organic matter decomposes it gives ammonia.
D. All of the above
Submitted by: Shafiq Rehman
