Ce înseamnă ciclul materiei?

Test la biologie clasa a IX-a

Quiz
•
Biology
•
5th Grade
•
Hard
Used 105+ times
FREE Resource
5 questions
Show all answers
1.
MULTIPLE CHOICE QUESTION
20 sec • 1 pt
Totalitatea de cicluri biologice din natură
Totalitatea de fluxuri biogeochimice
Totalitatea de cicluri biogeochimice
2.
MULTIPLE CHOICE QUESTION
30 sec • 1 pt
Azotul atmosferic este fixat decătre:
Plantele leguminoase
Bacterii azotofixatoare
Ambele variante corecte
3.
MULTIPLE CHOICE QUESTION
30 sec • 1 pt
Rolul ciclurilor biogeochimice constă în :
Refacerea materiei pe Terra
Asigurarea cu substanțe organice a organismelor vii
Existența vieții pe Pământ
4.
MULTIPLE CHOICE QUESTION
30 sec • 1 pt
Materia reprezintă:
Totalitatea de substanțe organice
Totalitatea de substanțe anorganice
Totalitatea de substanțe organice și anorganice
5.
MULTIPLE CHOICE QUESTION
30 sec • 1 pt
Azotul nu poate fi folosit direct de către organismele vii,deoarece:
nu întreține viața
este greu de asimilat
Moleculele azotului sunt greu de descompus
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