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What is the basic function of catabolic operons like the lac operon?carbon and glucose
Excretion I believe let me know if i was wrong.
:)
Answer: The thoracic cavity is separated from the abdominopelvic cavity by the diaphragm. The thoracic cavity is further separated into the pleural cavity which contains the lungs and the superior mediastinum which includes the pericardial (heart) cavity.
Explanation:
B
less field space will be wasted