Comparative and experimental investigations are two of three scientific investigations, the other is descriptive investigations.
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Answer:
With alleles 'A' and 'a' there are three possible genotypes AA, Aa and aa
Explanation:
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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.
Energy is used to break down glucose in the presence of oxygen to produce carbon dioxide and water.
