"helmholtz’s study of nerves in the frog showed that a. there was specificity in sensory nerves b. there was specificity in motor nerves c. nerves conducted on an all or none basis d. the speed of neural transmission was measureable"

The answer is D; The speed of neural transmission is measurable

Explanation:

Helmholtz constructed an apparatus specially to measure short time intervals of the order of ten-thousandths of a second, Helmholtz was able, in an elegant experiment published in 1850, to measure precisely the speed of conduction of the nerve signals in the motor nerve of the frog's leg.

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 answer is a) cell division.

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