What is the source of thermal energy,the direction as matter flow,and the role of gravity in the process?

Heat is the flow of thermal energy.

Explanation:

Thermal energy refers to the energy contained within a system that is responsible for its temperature. Heat is the flow of thermal energy. A whole branch of physics, thermodynamics, deals with how heat is transferred between different systems and how work is done in the proces. hope it helps!

False

Explanation:

The autonomic nervous system supplies the organs of the body such as intestine, kidney etc and also controls the body functions.

It comprises of the sympathetic and parasympathetic nervous system.

SOME and not all visceral organs receive dual innervation(nerve supply) from both the sympathetic and parasympathetic divisions of the autonomic system and it’s dependent on the functions of the organ.