which neurotransmitter was the first one discovered, and is primarily responsible for movement abilities, including breathing?

In a voltaic cell, electrons flow from the (positive/negative) to the (positive/negative) terminal.

Determine the age of a fossil if it had only one eighth of its original carbon-14 content remaining?

The magnitude of the magnetic field at a certain distance from a long, straight conductor is represented by b. what is the magnitude of the magnetic field at twice the distance from the conductor? a. at twice the distance, the magnitude of the field is 4b.b. at twice the distance, the magnitude of the field is 2b.c. at twice the distance, the magnitude of the field is b/2.d. at twice the distance, the magnitude of the field is b/4.e. at twice the distance, the magnitude of the field remains equal to b.