|
How can slash and burn agriculture
|
|
1
|
1689
|
November 14, 2016
|
|
Write, what was the percentage of forest cover of India
|
|
1
|
1421
|
November 14, 2016
|
|
(a) Expand CFC. (b)How does it reduce ozone to oxygen?
|
|
1
|
3606
|
November 14, 2016
|
|
The figure given below shows the relative contribution of four
|
|
1
|
916
|
November 14, 2016
|
|
What measures, as an individual, you would take
|
|
1
|
775
|
November 14, 2016
|
|
List all the wastes that you generate at home, school or during
|
|
1
|
1041
|
November 14, 2016
|
|
Write critical notes on the following:
|
|
1
|
1318
|
November 14, 2016
|
|
Discuss the effects of sewage discharge
|
|
1
|
943
|
November 14, 2016
|
|
Why is there a decline in population of fish-eating birds,
|
|
1
|
2030
|
November 14, 2016
|
|
With the help a flowchart exhibit the events of eutrophication
|
|
1
|
4471
|
November 14, 2016
|
|
The diagram given below shows a river and the types of land uses
|
|
1
|
1681
|
November 14, 2016
|
|
Biological Oxygen Demand or BOD increases with increase in water
|
|
1
|
2276
|
November 14, 2016
|
|
‘Determination of Biological Oxgen Demand (BOD) can help
|
|
1
|
3557
|
November 14, 2016
|
|
Two types of aquatic organisms in a lake show specific growth
|
|
1
|
1727
|
November 14, 2016
|
|
Explain the variation of Dissolved Oxygen . (DO) with BOD
|
|
1
|
2071
|
November 14, 2016
|
|
Blend of polyblend and bitumen, when used, helps to increase
|
|
1
|
1749
|
November 14, 2016
|
|
Match the column I and II
|
|
1
|
754
|
November 14, 2016
|
|
Name an industry which can cause both air and thermal pollution as
|
|
1
|
1956
|
November 14, 2016
|
|
Study the given aquatic food chain and answer the questions that
|
|
1
|
2037
|
November 14, 2016
|
|
Study the graph below. Explain how oxygen concentration
|
|
1
|
1639
|
November 14, 2016
|
|
Is it true that, if the dissolved oxygen level drops to zero,
|
|
1
|
1196
|
November 14, 2016
|
|
It is a common practice to plant trees and shrubs near the boundary
|
|
1
|
1641
|
November 14, 2016
|
|
Is it true, that carpets and curtains/oblique drapes placed on
|
|
1
|
616
|
November 14, 2016
|
|
State the function of catalytic converter in automobile
|
|
1
|
1991
|
November 14, 2016
|
|
When and where was the World Summit on sustainable development
|
|
1
|
1179
|
November 12, 2016
|
|
How can you, as am individual, prevent the loss of biodiversity?
|
|
1
|
8563
|
November 12, 2016
|
|
Describe the consumptive use value of biodiversity as food,
|
|
1
|
1670
|
November 12, 2016
|
|
Many plant and animal species are on the verge of their extinction
|
|
1
|
1361
|
November 12, 2016
|
|
There are many animals that have become extinct in the wild
|
|
1
|
605
|
November 12, 2016
|
|
Which type of conservation measures, in situ or ex situ
|
|
1
|
1458
|
November 12, 2016
|