A. Excess use of fertilizers
B. Addition of wastes on soil
C. Reduction in soil productivity
D. All of these
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The correct answer to the question: "Positive pollution of soil is due to:" is "All of these".
A. Excess use of fertilizers
B. Addition of wastes on soil
C. Reduction in soil productivity
D. All of these
A. Phosphene
B. SiF4
C. Dust
D. Halogens
A. Nitrites
B. Nitrates
C. Nitrogen
D. Nitric and nitrous acids
A. CFC, CH4 and SO2
B. Sulphates of Na, Ca and Fe
C. Fly ash
D. All of these
A. Fertility
B. Porosity
C. Thickness
D. Nitrates
A. Population explosion
B. Nitrogen di-oxide
C. Global warming
D. Sulphur dioxide
A. Burning of fossil fuel
B. Thermal power plants
C. Sewage
D. Suspended particles
A. Traffic sirens
B. Sirens and loud speakers
C. Kitchen appliances, radio and TV
D. Industries
A. Barium
B. Cadmium
C. Iron
D. Mercury
A. DDT is a growth retardant
B. Pesticides
C. Minerals
D. Carbon deposit
A. Hot water from power plants
B. Hot chemicals from industries
C. Waste from mines
D. Waste from agricultural fields
The correct answer to the question: "Positive pollution of soil is due to:" is "All of these".
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