Forestry

Sulphuric acid alone

Nitric acid alone

Nitrous acid and sulphurous acid

Sulphuric acid, sulphurous acid nitric acid and, nitrous acid

Upright

Inverted

Rhomboidal

Linear

Producers more than herbivores

Producers equal to herbivores

Producers less than herbivores

Variable

Eichhornia crassipes

Escherichia coli

Entamoeba histolytica

Lemna pancicostata

It gives off a bad small

It removes the food eaten by fishes

It increases the competition with fishes for dissolved oxygen

Excessive CO2 is added to water

Alpine grazing lands

Sub-alpine scrub

Temperate forests

All of the above

Soil only

Soil and water both

Air and water both

Air, soil and water

Lag phase

Linear phase

Stationary phase

Exponential phase

Industrial forestry

Energy forestry

Both (a) & (b)

None of these

Soil pollution

Creeping death of soil

Loss of living stratum

Loss of feeding zone