We get tired after exercise because our muscle fibers get tired very quickly. This is due to the major source of energy for the muscle tissue, called adenosine triphosphate, or ATP. As the muscles make use of this supply of energy, they get tired and fatigue.
Answer:
sleeping and playing feelings luv
Explanation:
The layer that encloses and protects the heart is
Pericardium
Answer:
Canada
Explanation:
mixed economy because it involves both private and public ownership of capital and resources. Goods and services are produced and provided by both governments and privately owned companies.
