Autosomes are chromosomes.

well, that's easy; the answer's c, "it reduces contamination of the water and substrate of the estuary."

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.

the tricuspid valve is present between right atrium and right ventricle