Plz, 79 points why desertification a problem a new farmland is attained b more people will immigrate to deserted areas c sand machinery run more efficiently or d breathing air contaminated with sand particles can be hazardous.

A. new farmland is attained

Your answer will be D if a person breaths in air paticlkes could be hazard because it is not C because sand can ruin machinery it is not B because you immigrate to a deserted area there are no resources in less you have a lot of money to pay for those resources when it came down to rather A, and D I choose D because D if a person breaths in air with any particles it could choke the person or even take that persons life!

Your answer is D.

The infrared (ir) and the ultraviolet(uv) represent the two extremities of the visible spectrum (400-700nm). while ir represents electromagnetic radiation with wavelengths longer than those of visible light, uv represents wavelengths shorter than visible light