Forestry

An abundant family of simple mostly marine organisms

The important to scientists who are studying climatic change

Both (a) & (b)

None of these

Most probable number

Millions per night

Millennium of probable number

None of these

High

Low

Same

None of these

When mature crop is removed by clear felling and regeneration is entirely by vegetative methods

When some selected shoots are selected for retention for future period

When crop is partly of coppicing and partly of seedling organ of different age clear

None of these

Implement programmes to minimize environmental pollution and environmental hazards through tree conservation and planting

Develop a framework and prepare programmes for establishing green wind breaks on arid lands to check erosion and desertification

Establish green areas in all cities having populations of 50,000 or more

All of the above

Increases

Slightly decreases

Remains unchanged

Decreases drastically

It is not compulsory that within a local climatic area only a particular tree grows wel

We know that southern aspects are hotter than northern aspects

Both (a) & (b)

None of these

SO2

Fluoro-carbons

CCI4

CO

1925

1926

1927

1928

Savana

Autotrophic

Heterotrophic

Tundra