Questions

The combined gas law states that the ratio between the pressure-volume product and the temperature of a system remains constant.

Hence it depends on all the three Volume, Temperature & Pressure.

The resistivity of wire or the metal conductor is depend on the number density of free electrons in the conductor. so its mainly depends on nature of the material

Economic resources include land, labour, capital and entrepreneurship. 

Entrepreneurship is also considered an economic resource because individuals are responsible for creating businesses and moving economic resources in the business environment.

These economic resources are also called as Factors of production.

"The reason for playing softly" is not a motive. Motives are the building blocks for large forms composed during the common practice period and, for some, beyond. Composers who used motives would include Beethoven, Mozart, Schubert, Mendelssohn and Brahms.

The required number is SEVEN.

If you remove  S, it becomes EVEN.