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Early whales moved from terrestrial to aquatic environments
Water and salt regulation by isosmotic, hyperosmotic, and hypoosmotic aquatic organisms.
In most ecosystems, sunlight provides the ultimate source of energy to power all biological activity
Hong Kong is a strange situation. A British colony since 1842, it was handed back to China in 1997 a
(a) Varicella zoster virus recurring as shingles, a painful rash limited to an area enervated by 1 ...