Answer: During vigorous exercise your breathing rate increases in order to intake more oxygen
Explanation: during vigorous exercise / activity the body needs more oxygen in order to produce energy so your breathing rate increases in order to reach the demand of more intake of oxygen , and your muscles work harder due to an increase in oxygen demand and how much oxygen the muscles take from the blood during vigorous exercises , BUT during rest we have normal rate of oxygen intake because your body is at rest at that moment .
HOPE THIS HELPS!!!!!!!!!!!!!!!!!!!!!!!!!
There maybe a lot of enzymes in bacteria , and there are much copies it can hold
The enzyme pectinase speeds up the breakdown of pectin in fruits, producing more juice. It speeds up breakdown of pectin in plant cell walls, thus creating more juice. It is also used in wine making to avoid cloudiness