3) With the increase in mechanization there was an increase in the use of coal for steam power and later oil for internal combustion engines
It is nitrogen making words to make twenty
The cardiovascular and immune
The muscular system can be broken down into three types of muscles: skeletal, smooth and cardiac, according to the NIH. Skeletal muscles are the only voluntary muscle tissue in the human body and control every action that a person consciously performs. The muscle that is found at the heart is Cardiac Muscle. It is an involuntary, striated muscle that constitutes the main tissue of the walls of the heart. Hope this helps.
