Ais placed at the beginning of a staff to show the exact pitch of each line and space.

The answer is: The clef.

Step-by-step explanation:

The clef in musical notation is a sign whose function is to indicate the height of written music, assigning a certain note to a line of the staff, which is taken as a reference point to establish the names of the rest of the notes. It is located at the beginning of each staff, although it can be changed at any time during the course of the work if required.

The answer is: The clef.

37

step-by-step explanation:

pakistan's principal natural resources are arable land and water. about 25% of pakistan's agriculture accounts for about 21% [1] of gdp and employs about 43% of the labour force. in pakistan, the most agricultural province is punjab where wheat and cotton are the most grown.