They are used as radio waves, infrared radiation, visible light.
Answer:
the organized labor unions fought for better wages, reasonable working hours and safer working conditions for everyone
B, D, and E are all push factors, the rest are pull factors
The answer is oral language skills which refer to the ability of one to break down the speech in smaller units of a sentence and syllable. This is vital in jobs which require people to communicate with others like politicians, negotiators, salesmen, etc.
