Download e-book for kindle: Britannica Illustrated Science Library Volume 17 - Ecology by Britannica Illustrated Science Library Staff

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By Britannica Illustrated Science Library Staff

ISBN-10: 1615353402

ISBN-13: 9781615353408

ISBN-10: 1615353410

ISBN-13: 9781615353415

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RINGED SEAL Pusa hispida The most common seal of the Arctic is a small, spotted species that can live in open water but prefers floating ice. Once on the ice, it digs a lair with air holes with cone-shaped entrances to the water. These constructions protect it from the elements and from predators. It is the favorite prey of the polar bear. EXTREME SURVIVAL In general, low temperatures reduce the speed of chemical reactions and slow metabolism. The animals in the Arctic, however, have succeeded in adjusting to this climate, and they continue with their activities.

The salty taste of ocean water is the result of the large amount of chloride it contains. 5% TYPES OF SALT The water of the marine ecosystems contains other salts in addition to sodium chloride, such as sulfates and chlorides of magnesium, calcium, and potassium in fixed proportions. 3% Sodium chloride (halite) UNDERWATER PRESSURE The pressure of the water increases about one bar for every 33 feet (10 meters) of depth. This fact creates a challenge for undersea scientific explorers, who must undergo slow decompression when they ascend.

SNOW LEOPARD Panthera uncial The silverback will yawn when it is nervous and will bark and stare in defense. The mountain gorilla is basically herbivorous, but it can also eat larvae, ants, and snails. It is in constant danger from poachers. This feline with shaggy fur can live in habitats as high as 16,500 feet (5,000 meters) above sea level. Except during mating season, it is a solitary animal. The fur of the snow leopard serves as camouflage among the rocky slopes while it lies in wait for prey.

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Britannica Illustrated Science Library Volume 17 - Ecology by Britannica Illustrated Science Library Staff

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