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Ethel shiju from National Public School Indiranagar, Bangalore
Subject :NSO    Class : Class 8

The overuse of fertilisers in a farm results in the runoff pollution of nearby river. Which of the following graphs correctly represents the resulting changes in the levels of oxygen and bacteria in that river?


A
B
C
D


Could someone pls explain?

Ans 1:

Zainab from St. Mary's Convent Inter College, Lucknow
Class : Class 8
D

Ans 2:

NIVED PRAKASH NAIR from SARVODAYA, THIRUVANANTHAPURAM
Class : Class 8
The ans is not DEutrophication decreases oxygen and the graph shows increasing oxygen

Ans 3:

Chatresh ramasai gudi from Bgsnps , Bangalore
Class : Class 8

Ans 4:

Hprakash09 from Billabong high Bhopal, Bhopal
Class : Class 7
Shouldn't the answer be D?

Ans 5:

Paarth Vashistha from Kunskapsskolan Gurgaon , Gurgaon
Class : Class 8

Ans 6:

pranil mishra from KVS, bhubaneswar
Class : Class 9
answer should be d

Ans 7:

Shlok Ghadekar from Tomoae school, Amravati
Class : Class 8
the answer should be D

Ans 8:

ANUSHKA SHARMA from CAMBRIDGE COURT WORLD SCHOOL, JAIPUR
Class : Class 8

Ans 9:

Can I get Rank 35 darryl from Global Indian international school, Brawl stars
Class : Class 8

Ans 10:

Rishika Misra from AECS 4, Rawatbhata
Class : Class 9
This answer is WRONG!! Answer should be D.

Ans 11:

Chatresh ramasai gudi from Bgsnps , Bangalore
Class : Class 8
Answer should be D

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