The changes in foot structure in a bird population over. Evolution leads to less complex organisms. And also the lock-and-key model.
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Nitrogen is a critical limiting nutrient in many systems, including forests, wetlands, and coastal.
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So there's a simple explanation for the Great Oxidation Event. It was the cyanobacteria, pumping out unwanted oxygen, that transformed Earth's atmosphere. ... That means the cyanobacteria were busy pumping out oxygen for at least half a billion years before oxygen started appearing in the air.
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D. the maintenance of homeostasis within the body system.
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The correct answer is A. The region of the diencephalon that is responsible for maintaining homeostasis is the hypothalamus.
Explanation:
One of the main functions of the hypothalamus is to control the pituitary gland, an endocrine gland that participates in the regulation of various functions of the organism, many of them related to homeostasis (regulation of glycemia, osmolarity, etc).