Forestry

Low temperature

High wind velocity

High light intensity

None of these

Ozone layer in the atmosphere

Infra-red radiations

Moisture in the atmosphere

CO2 in the atmosphere

The development of resistant pest varieties

Simplification of food web

Reduction in population of useful birds

Increase in weed population

Ecosom

Ecosphere

Microcosm

Holocoene

Acacia nilotica

Acacia catechu

Acacia senegal

All of the above

Seral community

Climax community

Both (a) & (b)

None of these

Removal of the natural vegetation cover

Cultivation of land by crops which expose the soil to direct rain impact and runoff water

Both (a) & (b)

None of these

Human beings

Non-pathogenic microbes

Pathogenic microbes

Grazing animals

C16

C18

Both (a) & (b)

C10

It is specialized branch branch of forestry that has as its objective the cultivation and management of trees for their present

Potential contribution to the physiological, socio-logical and economic well being of urban society

Both (a) & (b)

None of these