Gases commonly referred to as ‘green house gases’ are:

Thinning define as:

Damage caused by fire is / are:

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:

Which of the following food chain may not be directly dependent upon solar energy?

Pinus helepensis (Quetta pine) period of ripening of seed is: