A variable pitch propeller provides an optimum angle of attack for the propeller blades for a longer range which reduces fuel usage, fixed pitch propellers only have a certain rpm.

No

Crew Resource Management (CRM) is the effective use of all available resources for flight crew personnel to assure a safe and efficient operation, reducing error, avoiding stress and increasing efficiency.

The airspeed indicator uses part of the aircraft's pitot-static system to measure and compare the dynamic air pressure between air moving into the pitot tube and static air pressure measured in the case. 

The ASI is calibrated to ISA at MSL and represents the dynamic pressure as indicated airspeed in knots per hour.

ASI errors can originate and vary from:

Instrument Pressure Density Compressibility Maneuver Blocked pitot static system

Profile drag, also known as pressure drag or form drag, is the drag caused by the separation of the boundary layer from a surface and the wake created by that separation.

It is primarily dependent upon the shape of the object and increases directly with speed as the faster an aircraft moves the more air molecules collide with it.

The speed is too low for an indication.

SOP's are Standard Operating Procedures, they provide safety, uniformity and work ethics.

Taxi, trip, contingency, reserve and extra fuel.

Frequency range from 200-1750kHz, medium and low range frequency bands.

A line of latitude.