In a classroom experiment, a student rubs a comb against her hair. the comb is then brought near bits of paper resting on a surface. which of these can be concluded if the comb picks up the bits of paper?
a)
the comb is an insulator, but paper conducts electricity.
b)
the comb had a net charge on it, and it attracted a neutral object.
c)
the comb was left uncharged, and it attracted a positively charged object.
d)
the comb was positively charged, and it attracted a negatively charged object.

answer is b dont trust the verified answer for usa testprep

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.