unusable form of nitrogen for most living things, bacteria "fix" nitrogen into ammonium form, bacteria change ammonium in to usable forms, plants take up usable nitrogen, animals eat to get the nitrogen from their food, plants and animals decompose returning nitrogen to soil, bacteria change usable nitrogen back into unusable form.

аутор

Табела

Визуелни стил

Поставке

Промени шаблон

)
Врати аутоматски сачувано: ?