I believe it’s true but not positive good luck hope this helps
Well the bottom level for the feudal system were system or surfs, they were owned my the land so the did all the farming or ranching, and then the next class was merchant and they traded with other towns or cities, so yes the feudalism did allow for production and trade of goods
Answer:
option D: produced its own contractile cycle
Explanation:
option D: produced its own contractile cycle
Autorhythmicity referred to that capability of cells of cardiac muscles that help to beat heart regularly and rhythmically. It is due to that potential which is produced by cells of cardiac muscles. these cells does not required stimulation to beat heart.
autorhythmic cells are generate at sinoatrial and atrioventricular nodes.
Secondary reinforcers are learned or conditioned. An example of a secondary reinforcer is grades or money. Secondary reinforcers are learned and are reinforced by the continual use of the reinforcer. Primary reinforcers are biological and include food, drink, and pleasurable activities.
