Study of relationship between communities and environment is called:

The West Pakistan Fisheries Ordinance, ________ (Ordinance No. XXX of 1961):

Pakistan Journal of Forestry published quarterly is the major organ for dissemination of research results in addition to that ________ are regularly brought out for the benefit of the field foresters and researchers:

The number of individuals of a species in a particular ecosystem at a given constant due to:

Forests are assigned difficult inaccessible and low quality lands are

Thinnings is: