In Pakistan there is general deficiency of rainfall. It varies from 125 mm annually in upper Sindh to about 900 mm in the sub-mountainous of northern Pakistan. In Balochistan the mean annual rainfall is about 200 mm, diminishing to ________ mm in the desert of Kharan:

Trachea in insects are the organ of________?

Pheromone used against fruity fly is________?

Type of pheromone which get together the insects for food and mating is known as________?

In California the age of citrus tree is________?

Norine 10 is the source of dwarfing gene in________?