1. photodynamic action
2. destruction of hydrogen bonds between DNA strands
3. formation of pyrimidine
4. destruction of ester bonds
destruction of hydrogen bonds between DNA strands
1. Pasteur effect
2. Green house effect
3. Blackman effect
4. Emerson effect
Green house effect
1. Extensive use of chemical fertilizers may lead to eutrophication of nearby water bodies
2. Both azotobacter and rhizobium fix atmosphere nitrozen in root nodules of plants
3. Cyanobacteria such as anabaena and nostoc are important mobilizers of phosphates and potassium for plant nutrition in soil
4. At present it is not possible to grow maize without chemical fertilizers
Extensive use of chemical fertilizers may lead to eutrophication of nearby water bodies
1. 50%
2. 70%
3. 80%
4. 100%
80\%
1. Sea
2. Air
3. Jet aeroplane emission
4. Soil
Jet aeroplane emission
1. allergy
2. bronchitis
3. disturbance of psychomotor function
4. diarrhea
disturbance of psychomotor function
1. Sludge worms
2. Blood worms
3. Stone files
4. Sewage fungys
Stone files
1. Goitre disease
2. Thyroid disease
3. Dental disease
4. Beri-beri
Dental disease
1. SO2
2. NOx
3. SPM
4. CO
SPM
1. root pressure
2. imbibition
3. osmosis
4. transpiration
root pressure