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biology 0610printed 271 · PDF 271
328 pagesrevision 46933
printed 271 · PDF 271
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Nitrogen Cycle
Nz in the
atmosphere
eo: he 4
+, «lightning
‘ 4s
Absorption of
PN, in animals
Decomposers
Nitrogen-tixing
bacteria
Denitrifying
bacteria
(2) Ammonification
Nitrifying bacteria
Nitritying bacteria
Nitriticetae
Nitrification
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