Class 9 biology Practice Tests
Class 9 Biology Online Tests
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The MCQ: If the nitrogen is the main element of fertilizers then the fertilizers are classified as; "Importance of Fertilizers" App Download (Free) with answers structural fertilizers, non-structural fertilizers, nitrogen fertilizers and respiratory fertilizers to study online classes courses. Solve nutrition quiz questions, download Google eBook (Free Sample) for online learning.
MCQ 1: If the nitrogen is the main element of fertilizers then the fertilizers are classified as
MCQ 2: The increased ratio of chemical nutrients in the ecosystem is classified as
MCQ 3: The excess of nitrogen fertilizers leads to
MCQ 4: The greenhouse gas which can be emitted from the storage of nitrogen-based fertilizers is
MCQ 5: The organic fertilizers can be derived from
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