Indus river is one of the longest river of Asia measuring about________?

central part of animal body is called ________?

In wheat total crop N uptake per ton of grain is about________?

Surface tension is the property of a liquid which enables it to resist tensile stress. the surface tension of water is equal to ________ Kg/m?

According to one estimate, wind and water erosion over ________ % of the Pakistan’s total area?

Term forest is derived from: ________?