NidhiKaushik26

ncert science cbse class 6 science chemistry online covid separation education online teaching biology food animals natural fibre nature environment hazard synthetic pollution plastic neuralization exercise class 7 salt bases acid heterotropic nutrition nutrition in animals chapter components of food corona vaccine antibiotic foe friends microorganisms class 8 physical property chemical property ores metallurgy nonmetals metals distillation sieving filtration online business scavengers decomposers nector honey vegetarian omnivores carnivores herbivores ncert exercise ingredient adaptations climate change weather coir fabric fibre jute cotton