Unlike amphibians, reptiles
a. have lungs to oxygenate blood.
b. use single-loop circulatory system.
c. have a closed circulation system in which blood circulates entirely within blood vessels.
d. have ventricles that are further divided to lessen mixing of oxygen-rich and oxygen-poor blood.

the relative standard reduction potential of the half-cell in which reduction occurs; more positive than the other half-cell. reduction is a chemical process in which electrons are added to an atom or an ion; it always occurs accompanied by oxidation of the reducing agent.

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.