The answer is microevolution.
The answer is : crossing over can increase genetic variations during meiosis
Answer:
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Explanation:
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Answer:
A. the digestive, muscular, and respiratory
Explanation:
Muscle weakness affects the muscular system (muscles are in the muscular system) , stomach pain affects the digestive system (stomach is a part of the digestive system), and coughing affects the respiratory system (coughing hinders the ability to breathe properly).
Atoms are the smallest unit of non-living things and CELLS are the smallest unit of living things.