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COSMIC | SCIENCE-8 | CH-1 : NUTRITION IN PLANTS

COSMIC | SCIENCE-8 | CH-10 : SOUND

COSMIC | SCIENCE-8 | CH-11 : CHEMICAL EFFECTS OF ELECTRIC CURRENT

COSMIC | SCIENCE-8 | CH-12 : SOME NATURA PHENOMENA

COSMIC | SCIENCE-8 | CH-13 : LIGHT

COSMIC | SCIENCE-8 | CH-2 : MICROORGANISMS : FRIEND AND FOE

COSMIC | SCIENCE-8 | CH-3 : COAL AND PETROLEUM

COSMIC | SCIENCE-8 | CH-4 : COMBUSTION AND FLAME

COSMIC | SCIENCE-8 | CH-5 : CONSERVATION OF PLANTS ANDANIMALS

COSMIC | SCIENCE-8 | CH-6 : REPRODUCTION IN ANIMALS

COSMIC | SCIENCE-8 | CH-7 : REACHING THE AGE OF ADOLESCENCE

COSMIC | SCIENCE-8 | CH-8 : FORCE AND PRESSURE

COSMIC | SCIENCE-8 | CH-9 : FRICTION