The application features the following

-CROP PRODUCTION AND MANAGEMENT
-MICROORGANISMS
-SYNTHETIC FIBRES AND PLASTICS
-METALS AND NO-METALS
-COAL AND PETROLEUM
-COMBUSTION AND FLAME
-CONSEVATION OF PLANTS AND ANIMALS
-CELL STRUCTURE AND FUNCTIONS
-REPRODUCTION IN ANIMALS
-REACHING THE AGE OF ADOLESCENCE
-FORCE AND PRESSURE
-FRICTION
-SOUND
-CHEMICAL EFFECETS OF ELECTRIC CURRENT
-SONE NATURAL PHENOMENA
-LIGHT
-STARS AND THE SOLAR SYSTEM
-WATER AND AIR POLLUTION