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T1. solar system 3, plates, orbits, periods, light,

Education T1. solar system 3, plates, orbits, periods, light,

Education Ii matter

T-III The Earth. Earth's layers, crust, atmosphere, hydrosphere, carbon cycle, water cycle

Education T-III The Earth. Earth's layers, crust, atmosphere, hydrosphere, carbon cycle, water cycle

Iv living things,

Education Iv living things,

Exams on science,

Education Exams on science,