4. Giving one example of each kind, show that a change in energy takes place when a physical or a chemical change occurs. 5. Explain why there is an energy change in a change of state of matter as well as in a chemical change.

4. Giving one example of each kind, show that a change in energy takes

1.	4. Giving one example of each kind, show that a change in energy takes place when a physical or a chemical change occurs. 5. Explain why there is an energy change in a change of state of matter as well as in a chemical change.
Answer» The neurogenic heart is a characteristic feature of most arthropods and some ANNELIDS. In this, the heart beat is INITIATED by a nerve impulse coming from a nerve ganglion situated NEAR the heart. ... In this, heart beat is initiated by a PATCH of MODIFIED heart muscle itself