Question

question #11
on what basis are present day weather predictions made?
a local air temperatures
b air mass movements
c flow of ocean currents
d relative humidity levels

Explanation:

Weather predictions rely on tracking air mass movements. Air masses have distinct temperature and moisture properties, and their movement (like warm/cold fronts) drives weather changes. Local temp (A), ocean currents (C), or humidity (D) are factors but not the primary basis for overall weather prediction; air mass movement is key.

Answer:

B. air mass movements