|
How can slash and burn agriculture
|
|
1
|
1733
|
November 14, 2016
|
|
Write, what was the percentage of forest cover of India
|
|
1
|
1483
|
November 14, 2016
|
|
(a) Expand CFC. (b)How does it reduce ozone to oxygen?
|
|
1
|
3651
|
November 14, 2016
|
|
The figure given below shows the relative contribution of four
|
|
1
|
943
|
November 14, 2016
|
|
What measures, as an individual, you would take
|
|
1
|
806
|
November 14, 2016
|
|
List all the wastes that you generate at home, school or during
|
|
1
|
1084
|
November 14, 2016
|
|
Write critical notes on the following:
|
|
1
|
1367
|
November 14, 2016
|
|
Discuss the effects of sewage discharge
|
|
1
|
992
|
November 14, 2016
|
|
Why is there a decline in population of fish-eating birds,
|
|
1
|
2085
|
November 14, 2016
|
|
With the help a flowchart exhibit the events of eutrophication
|
|
1
|
4526
|
November 14, 2016
|
|
The diagram given below shows a river and the types of land uses
|
|
1
|
1775
|
November 14, 2016
|
|
Biological Oxygen Demand or BOD increases with increase in water
|
|
1
|
2344
|
November 14, 2016
|
|
‘Determination of Biological Oxgen Demand (BOD) can help
|
|
1
|
3629
|
November 14, 2016
|
|
Two types of aquatic organisms in a lake show specific growth
|
|
1
|
1774
|
November 14, 2016
|
|
Explain the variation of Dissolved Oxygen . (DO) with BOD
|
|
1
|
2115
|
November 14, 2016
|
|
Blend of polyblend and bitumen, when used, helps to increase
|
|
1
|
1792
|
November 14, 2016
|
|
Match the column I and II
|
|
1
|
797
|
November 14, 2016
|
|
Name an industry which can cause both air and thermal pollution as
|
|
1
|
2004
|
November 14, 2016
|
|
Study the given aquatic food chain and answer the questions that
|
|
1
|
2085
|
November 14, 2016
|
|
Study the graph below. Explain how oxygen concentration
|
|
1
|
1688
|
November 14, 2016
|
|
Is it true that, if the dissolved oxygen level drops to zero,
|
|
1
|
1262
|
November 14, 2016
|
|
It is a common practice to plant trees and shrubs near the boundary
|
|
1
|
1687
|
November 14, 2016
|
|
Is it true, that carpets and curtains/oblique drapes placed on
|
|
1
|
658
|
November 14, 2016
|
|
State the function of catalytic converter in automobile
|
|
1
|
2037
|
November 14, 2016
|
|
When and where was the World Summit on sustainable development
|
|
1
|
1218
|
November 12, 2016
|
|
How can you, as am individual, prevent the loss of biodiversity?
|
|
1
|
8637
|
November 12, 2016
|
|
Describe the consumptive use value of biodiversity as food,
|
|
1
|
1737
|
November 12, 2016
|
|
Many plant and animal species are on the verge of their extinction
|
|
1
|
1401
|
November 12, 2016
|
|
There are many animals that have become extinct in the wild
|
|
1
|
648
|
November 12, 2016
|
|
Which type of conservation measures, in situ or ex situ
|
|
1
|
1513
|
November 12, 2016
|