How does Salmon Brown’s account compare to Fredrick Douglass' account?

the difference is that white collar worker performs skills like worker as a scientist or well blue collars do physical work and they do services like being a cook.

explanation:

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the exclusive possession or control of the supply or trade in a commodity or service.

incident infrared radiation is blocked. visible and ultraviolet radiation heat   earth.

earth radiates infrared radiation. infrared radiation is blocked and heats earth. visible and shortwave radiation heat earth.

earth radiates longwave radiation

longwave radiation is reflected downward longwave radiation heats earth