
Echilibrul chimic
Authored by Denisa Codrea
Others
9th Grade
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10 questions
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1.
MULTIPLE CHOICE QUESTION
30 sec • 1 pt
Ce reprezintă echilibrul in natura?
o stare de imobilitate completa a ecosistemelor
Ansamblul starilor sĩ interrelatiilor dintre elementele componente ale unui sistem ecologic
Numărul fix de indivizi dintr-o populatie
Lipsa fluctuatiilor in mediul natural
2.
MULTIPLE CHOICE QUESTION
30 sec • 1 pt
Ce efect are interventia brutala a omului asupra mediului natural?
Creșterea biodiversității
Îmbunătăteste calitatea apei
Risca sa distrugă echilibrul ecologic
Nu are niciun asupra ecosistemelor
3.
MULTIPLE CHOICE QUESTION
30 sec • 1 pt
Care este rolul soarelui in ecosistemele terestre?
Trimite caldura si energie de care au nevoie plantele
Asigura oxigen pentru animale
Imbogateste solul cu nutrienti
Reduce poluarea atmosfericã
4.
MULTIPLE CHOICE QUESTION
30 sec • 1 pt
Ce tip de hrană consuma omul?
Exclusiv vegetală
Exclusiv animala
Hrana de origine vegetalã si animala
Doar produse marine
5.
MULTIPLE CHOICE QUESTION
30 sec • 1 pt
Ce este un ciclu biogeochimic?
O succesiune de specii intr-un ecosistem
Schimbul de elemente chimice esentiale între componentele biosferei
Cresterea populatiei de bacterii intr-un ecosistem
Migratia speciilor intre habitate
6.
MULTIPLE CHOICE QUESTION
30 sec • 1 pt
Care dintre urmatoarele fenomene naturale are un impact semnificativ asupra echilibrului ecologic?
erupțiile vulcanice
cutremurele
inundațiile
toate cele menționate
7.
MULTIPLE CHOICE QUESTION
30 sec • 1 pt
de ce depind toate plantele si animalele?
De componente abiotice ale mediului
de prezența omului
de temperaturile ridicate
de poluare
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