Need asap which of these was a negative result of the columbian exchange? a. native americans sold furs to europeans b. new crops were grown in africa c. desease killed millions of native americans d. new food sources were taken to europe

It is C Disease killed millions of native americans.

The reason this answer is correct is becuase A B and D are all good effects, you are looking for a NEGATIVE effect. hope this helps!

deadpool

explanation:

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