A substance used in a pesticide, it helps the spray material to adhere to the sprayed surface is called________?

The water vapours are generally present in a atmosphere, some times isolated and sometimes mixed with other gases. in such a situation the pressure exerted by each component of mixture, will be called ________?

A dam which the up lift pressure of the sub-soil water by its own weight is called ________?

The physical condition of soil is called________?

In date palm male spathes enclose how many flowers________?

What is the average particle/ true density of soil?