In a study of physical endurance researchers saw big increases in the heart rate and breathing rates of people immediatly after they took part of tough exercise which statement best explains the increse in the heart rate and breathing during exercise

The virus is considered to be are living item since they have hereditary material dnas or rnas. they can imitate and change. they respond to boosts, for example, radiation, chemicals, and warmth. they have antigenic properties. they are proficient to duplicate with a same hereditary constituent.