Is it true the heat from the sun can reach the earth through conviction

It is NOT true because space is almost completely empty. There is nothing to transfer the energy from the sun to the earth.

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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.