4klass uchebnik 7-9 uroki
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chast i 30 chelovek vliyaet na prirodu, chtobi sozdat sebe udobnie usloviya dlya jizni. chasto eti deystviya ploxo skazivayutsya na okrujayushey srede. mnogie rasteniya okazivayutsya na grani vimiraniya. naprimer, saksaul — luchshee po kachestvu toplivo. on dayot bolshe tepla, chem nekotorie vidi uglya. iz-za etogo bilo virubleno ogromnoe kolichestvo etix derevev. k sojaleniyu, saksaul rastyot ochen dolgo, novie derevya ne uspevayut virasti vzamen starix. segodnya saksaul naxoditsya na grani vimiraniya. kak chelovek vliyaet na jizn rasteniy privedite primeri, kak chelovek mojet navredit rasteniyam. 1. kakoy vred chelovek nanosit rasteniyam? vrednoe vozdeystvie na rasteniya pryamoe virubka lesov lesnie pojari sbor rasteniy vitaptivanie kosvennoe zagryaznenie vozduxa zagryaznenie vodi zagrya...
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