Forestry

The tallest living coniferous evergreen tree

To reach a height of over 300 feet

The Sequia sempervirens (the redwood tree is also very long lived) are found from southwest

All of the above

It decreases CO2 concentration

It competes O2 to combine with haemoglobin

It is carcinogenic

It depletes O3 layer

Spray dimecorn in the does of 0.05% or at the rate of 1 lb in 200 gallons of water

Spray dimecorn in the does of 0.04% or at the rate of 1 lb in 300 gallons of water

Spray dimecorn in the does of 0.03% or at the rate of 1 lb in 100 gallons of water

None of these

To society of American forests (SAF) is an eco-system characterized by a more or less dense and extensive tree cover

A plant community with predominance of trees and other woody vegetation, growing more or less closely together

Both (a) & (b)

None of these

1976

1977

1978

1979

Excessive rains

Wind storms

Overfelling and overgrazing

All of these

Preventing soil erosion

Developing a vegetational cover

Preventing overgrazing

Introducing agriculture

Horizons A2 and B

Horizon B only

Horizon A1

Horizons B and C

Irrigation

Industry

Irrigation and industry

In making dams

Organisms that swim in water

Floating plants

Suspended lower plants

Animals associated with plants