Home
Class 12
BIOLOGY
If large quantities of domestic sewage i...

If large quantities of domestic sewage is continuosly emptied into a small stream ,it leads to

A

depletion of oxygen content in stream water

B

depletion of nutrients in the stream water

C

enrichment of oxygen content in the stream water

D

increase in the total amount of life in the stream water.

Text Solution

Verified by Experts

The correct Answer is:
A
Promotional Banner

Topper's Solved these Questions

  • ORGANISMS AND POPULATIONS

    NCERT BANGLISH|Exercise QUESTIONS|18 Videos
  • PRINCIPLES OF INHERITANCE AND VARIATION

    NCERT BANGLISH|Exercise Questions|16 Videos

Similar Questions

Explore conceptually related problems

Domestic sewage of large cities

When domestic sewage mixes with river water

When domestic sewage mixes with river water

What are the various constituents of domestic sewage? Discuss the effects of sewage discharge on a river.

A lake with an inflow of domestic sewage rich in organic waste may result in

A river with an inflow of domestic sewage rich in organic waste may result in

The back flow of faecal matter from the large intestine into the small intestine is prevented by the presence of

A large quantity of one of the following is removed from our body by lungs.

The height of three right circular cones of radii 3 cm , 4 cm and 5 cm respectively is 10 cm . If a large metal cone of diameter 20 cm is made by melting those three small cones , then what will be the height of the large cone ?

Assertion (A): Many visitors to the hills suffer from skin and respiratory allergy problems. Reason (R): Conifer trees produce a large quantity of wind- borne pollen grains. a. If both Assertion and Reason are true and the Reason is the correct explanation of the Assertion, then mark a. b. If both Assertion and Reason are true but the Reason is not the correct explanation of the Assertion, then mark b. c. If Assertion is true statement but Reason is false, then mark c. d. If both Assertion and Reason are false statements, then mark d.

NCERT BANGLISH-PRACTICE PAPER -All Questions
  1. when a pure strain of tall plants (TT) within round seeds (RR) is cro...

    Text Solution

    |

  2. Photochemical smog always contains

    Text Solution

    |

  3. If large quantities of domestic sewage is continuosly emptied into a s...

    Text Solution

    |

  4. Insect tolerant gene from Bacillus thuringiensis is introduced using ...

    Text Solution

    |

  5. Match column I with II and select the correct option from codes given...

    Text Solution

    |

  6. Due to nondisjunction of chromosomes during spermatogenesis ,sperms ca...

    Text Solution

    |

  7. Which of the following is correct regarding genetic code?

    Text Solution

    |

  8. study the four statements given below and select the two correct ones...

    Text Solution

    |

  9. Which of the following is false?

    Text Solution

    |

  10. Which of the following DNA sequences qualifies to be designated as a p...

    Text Solution

    |

  11. Match column I with column II and select the correct option from the c...

    Text Solution

    |

  12. Select the correct statement.

    Text Solution

    |

  13. The haploid conttent of human DNA is

    Text Solution

    |

  14. Gel electrophoresis is a

    Text Solution

    |

  15. The egg apparatus of angiosperms comprises

    Text Solution

    |

  16. Which of the following is not a feature of a J-shaped growth form of p...

    Text Solution

    |

  17. How many different kinds of gametes will be produced by a plant having...

    Text Solution

    |

  18. Sickle-cell anaemia is

    Text Solution

    |

  19. In microbial genetics which one is referred to as "Griffith effect"?

    Text Solution

    |

  20. If percentage of cytosine is 18%, then percentage of thymine will be

    Text Solution

    |