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activity in charcoal in the course of tree growth

drawing made by students of Poltava school № 38

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Alvard Harehinivna Melkonian
Date de publicationPosted 27/02/21 09:17 - 941 vues

Tree growth

 
Carbon is needed for the growth of our tree, it has a positive effect on leaves, stems and roots
atmospheric data fenological observations poltava school № 38

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