MCQ on Biogeochemical Cycle (Nutrient cycle)
1. The main nitrogen reservoir in the biosphere is a) rock b) ocean c) organism d) atmosphere 2. The sediment…
1. The main nitrogen reservoir in the biosphere is a) rock b) ocean c) organism d) atmosphere 2. The sediment…
Class XII Topics : UNIT V: Ecology and environment Topics disc…
1. What is true of ecosystem? a) Primary consumers are least dependent upon producers b) Primary consumers out number …
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