Enzymes are in our bodies to speed up reactions etc. If there were no enzymes, then our bodies would act very slowly to reactions.
Answer:
Weakening of digestive smooth muscle with age can cause constipation.
Explanation:
Smooth muscles in the digestive system have the role to move food down the tract via radially symmetrical contractions (peristalsis). With age, the function of smooth muscles reduces, causing the food to move more slowly through the alimentary canal (digestive tract). As a consequence, water gets absorbed from food waste, which can cause constipation.
Without a control group there wouldn’t be any basis for knowing if a result is due to the variable being tested
Maybe its because males are more stronger than females specially physically than females
