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NEET UG BIOLOGY MCQ: ENVIRONMENTAL ISSUES
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Study the following statements regarding Ecosave toilet and select the incorrect ones
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Correct option: D
Enhance the need for chemical fertilisers
Option D (Enhance the need for chemical fertilisers) is correct because Ecosan toilets are designed to reduce the need for chemical fertilizers by recycling human excreta into natural fertilizers.
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A lake near a village suffered heavy mortality of fishes with in a few days. Consider the following reasons for this.
(i) Lost of urea and phosphate fertilizer were used in the crops in the vicinity
(ii) The area was sprayed with DDT by an aircraft
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(i) Lost of urea and phosphate fertilizer were used in the crops in the vicinity
(ii) The area was sprayed with DDT by an aircraft
(iii) The lake water turned green and stinky
(iv) Phytoplankton populations in the lake declined initially thereby greatly reducing photosynthesis. Which of the following is not used for disinfection of drinking water? World most problematic aquatic weed is