Digestive system in the planarias
Explain how are nutrients distributed by digestive system in the planarias?
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Planarias contain single opening digestive system (not complete) with ramifications which transport nutrients to all regions of the body.
Explain the term panspermia?
Explain the main substances transmitted from the mother to the fetus via the placenta and from the fetus to mother?
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Hawthorne studies Although the depression and the labor movement were at least, important indirect causes of the practice of the human relations, the Hawthorne studi
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