After completing 10 years of experimentation, a scientist reports a new scientific theory explaining the movement of sand on beaches.
How do you know that this information is valid?

There were too few years of data.

The initial hypothesis was incorrect.

The problem was not important enough.

Theories develop through repeated experimentation.

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.

allowed for the prediction of the properties of missing elements.