Why Mike a scientist repeat any spearmint if he she didn’t make a mistake in the first one?

Explanation:

i think its so that there wont be any mistake in when they are collecting their data which simplifys to  Experiments are often replicated or repeated even when no obvious mistake was visible

answer: national resource conservation services

national resource conservation services is the us. based approach that provides technical and financial assistance for natural resource management. nrcs society in conservation of resources by involving in activities like farmland protection, flood prevention, watershed protection, urban conservation, conserves economic and environmental conditions. it conducts soil surveys and implements the policy of natural resources management on the society.