| Column A | Column B | ||
| a | Catalytic converter | i | Particulate matter |
| b | Electrostatic precipitator | ii | Carbon monoxide and nitrogen oxides |
| c | Earmuffs | iii | High noise level |
| d | Landfills | iv | Solid wastes |
| Column A | Column B | ||
| a | Catalytic converter | ii | Carbon monoxide and nitrogen oxides |
| b | Electrostatic precipitator | i | Particulate matter |
| c | Earmuffs | iii | High noise level |
| d | Landfills | iv | Solid wastes |
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|
S.No.
|
Column I
|
S.No.
|
Column II
|
|
(A)
|
Standing crop
|
(i)
|
The amount of mineral nutrients in the soil at a given time
|
|
(B)
|
Standing state
|
(ii)
|
Sedementary cycle
|
|
(C)
|
Climax community
|
(iii)
|
Herbivores and carnivores
|
|
(D)
|
Primary producers
|
(iv)
|
In near equilibrium with the environment
|
|
(E)
|
Phosporus cycle
|
(v)
|
Mass of living matter in a trophic level at a given time
|
|
(F)
|
Secondary producers
|
(vi)
|
Phytoplanktons
|
