A soil Scientist helps find out if soil is able to be used as farmland. They look at how wet, and how dry the soil is to judge the land. They only study the first few meters in the Earth's crust. They also analyze nutrient capability in the soil. They help with global impact because without them, farmers would not be able to grow food for humans if they do not know about their soil.
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Created with images by PublicDomainPictures - "people scientist microscope"