They tested the blood of surviving children, took soil samples from family compounds and questioned parents about their dead children's symptoms. (scientificamerican.com)
I am a highly skilled military veteran with substantial experience in soil sampling, cultivation, and crop management for large - scale farm operation. (resumemycareer.com)
Additionally, researchers collected soil samples to check on the plant roots and determine how much carbon was being stored in the soil. (sciencedaily.com)