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Ansh Dhakate from SNBP Chikhali, Pune
Subject :Biology    Class : Class 6

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Yashraj Deshmukh from Sahyadri English School, Loha, Nanded
Subject :Biology    Class : Class 7

Ans 1:

Yashraj Deshmukh   from Sahyadri English School, Loha, Nanded
Class : Class 9
my answer is write

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Yashraj Deshmukh from Sahyadri English School, Loha, Nanded
Subject :Biology    Class : Class 7

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Yashraj Deshmukh from Sahyadri English School, Loha, Nanded
Subject :Biology    Class : Class 7

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Yashraj Deshmukh from Sahyadri English School, Loha, Nanded
Subject :Biology    Class : Class 7

In each of the following questions, a statement of Assertion (A) is given followed by a corresponding statement of Reason (R) just below it. Of the statements, mark the correct answer as
Assertion : All food chains are linked; if any one food chain is disturbed, it affects other food chains.
Reason : In a food chain, energy and nutrients are passed on from one organism to another.

A If both assertion and reason are true and reason is the correct explanation of assertion.
B If both assertion and reason are true but reason is not the correct explanation of assertion.
C If assertion is true but reason is false.
D If both assertion and reason are false.

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Yashraj Deshmukh from Sahyadri English School, Loha, Nanded
Subject :Biology    Class : Class 7

In each of the following questions, a statement of Assertion (A) is given followed by a corresponding statement of Reason (R) just below it. Of the statements, mark the correct answer as
Assertion : Organic impurities of sewage include human and animal excreta, urea (of urine), oil etc. Reason : Inorganic impurities of sewage include micro-organisms that cause water-borne diseases.

A If both assertion and reason are true and reason is the correct explanation of assertion.
B If both assertion and reason are true but reason is not the correct explanation of assertion.
C If assertion is true but reason is false.
D If both assertion and reason are false.

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Parth Venkat Aglawe from Kilbil National School Ahamadpur, Nanded
Subject :Biology    Class : Class 7

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Yashraj Deshmukh from Sahyadri English School, Loha, Nanded
Subject :Biology    Class : Class 7

Case study : Different organisms have different ways in which exchange of gases occurs. Different respiratory organs are skin, lungs, gills and some animals even respire through tiny holes. Students were asked to observe the aquarium and identify the method of breathing in aquatic organisms.

What is required by the organisms to survive in aquarium for longest possible time?

A Nitrates
B Oxygen
C Sunlight
D Carbon dioxide


Ans 1:

Yashraj Deshmukh   from Sahyadri English School, Loha, Nanded
Class : Class 9
HI

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Aprameyan from Abheek, Bangalore Urban
Subject :Biology    Class : Class 7

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Aprameyan from Abheek, Bangalore Urban
Subject :Biology    Class : Class 7

Ans 1:

Vivek Nagnath Wadhvane   from PINNACLE CBSE SCHOOL NANDED, NANDED
Class : Class 8
i think so that the answer must be B

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