The virtual temperature of a parcel may be increased by:

a.
increasing the density of the parcel

b.
reducing the pressure of the parcel

c.
increasing the temperature of the parcel

d.
increasing the mixing ratio of the parcel

e.
both c and d will increase the virtual temperature of the parcel

C.  Increasing the temperature of the parcel

D.  Increasing the mixing ratio of the parcel

Both C and D will increase the virtual temperature of the parcel

Explanation:

A change in temperature of the air can likewise change the relative moistness. Dew Point is the temperature to which a package of air must be cooled, at steady weight and water vapor content, for immersion to happen. Dew point is resolved regarding a level surface of the water.

Supreme moistness is equivalent to the mass of water vapor partitioned by the complete volume of air or water vapor thickness. Total stickiness changes as the volume of air package changes.

answer(c) carved on a babylonian clay tablet that showed earth as a flat circular disk;