True.
Epinephrine and norepinephrine are released as fight/flight response hormones when the body is under extreme stress.
Cortisol is released in response to stress too.
The heartbeat has two specialised areas of muscle (the sa node and the av node) that control and synchronise the heartbeat. The rhythm of relaxation and concentration of the pacemaker sets the rythym of the heartbeat.
Answer:
In about 100 years i believe
Explanation:
Supercooling and Superheating. "superheating". Generally speaking, a substance undergoes a "phase change" from liquid state to gaseous state when it is heated to its boiling point.
"Supercooling" is the process of chilling a liquid below its freezing point, without it becoming solid.
