Bears
Uljana Brezgina
Bears
Bears are mammals of the family Ursidae.
Bears are classified as caniforms, or doglike carnivorans, with the pinnipeds being their
closest living relatives.
Bears
Black bears
Black bears live in north America and central and eastern Asia.
Black bears are smaller than brown bears.
Black bears
10 punkti
Autor soovib selle materjali allalaadimise eest saada 10 punkti.
~ 13 lehte
Lehekülgede arv dokumendis
2012-05-29
Kuupäev, millal dokument üles laeti
3 laadimist
Kokku alla laetud
0 arvamust
Teiste kasutajate poolt lisatud kommentaarid
Uljana Brezgina
Õppematerjali autor
MOST ENDANGERED BEARS SIIRI PAURSON EMÜ 2016 TOPICS 1. GIANT PANDA (hiidpanda e. bambuskaru) 2. SUN BEAR (päikesekaru e. malai karu e. biruang) 3. ASIATIC BLACK BEAR (kaeluskaru) 4. SLOTH BEAR (huulkaru) 5. ANDEAN BEAR (prillkaru) 6. POLAR BEAR 7. BROWN BEAR 8. THE AMERICAN BLACK BEAR (baribal) 1. GIANT PANDA • The giant panda remains the world's most threatened bear species. • A very high risk of extinction (väljasuremine) in the wild. • Despite "the establishment of nearly 60 panda reserves, a ban on logging (metsaraie keeld), and widespread reforestation programmes," habitat
Tundra animals Reindeer Reindeer were first domesticated in Norway and northern Asia. When it was seen how valuable they were, they were brought to Alaska in 1887 and later to parts of Canada. These North American reindeer became known as caribou. Although they are called by different names, they are both considered to be a single species. Unlike deer, both the male and female have antlers. The antlers of the male are long, branched and massive, and they are a little flattened at the ends. The antlers of the female are much shorter, simpler and more slender and irregular. Their large, spreading hooves support the animal in snow in the winter and marshy tundra in the summer. Reindeer are also great swimmers and use their feet as paddles. They can also lower their metabolic rate and go into a semi-hibernation when conditions get very harsh. When it looks like there is nothing to eat on the winter tundra, reindeer will scrape the snow away wit
Polar bear Ursus maritimus or the "sea bear." Polar bears live near the circumpolar at north in areas where they can hunt seals at open leads. Scientists estimate that there are between 22000 to 27000 polar bears. Its closest relative is the brown bear. Adult male polar bears are 2,5 to 3 meters tall. They weigh 250 to 770 kilograms. Adult female bears are smaller. They are about 1,8 to 2,5 meters tall and weigh 90 to 320 kilograms. Polar bears usually eat seals usually the ringed seasl, but sometimes the bearded seals. When hunting is good, polar bears will typically eat only the fat and leave the rest of the carcass for scavengers including arctic foxes, ravens, and younger bears. Polar bears also sometimes kill and eat both walrus and beluga whales. They have even hunted short-legged reindeer and sometimes even birds and bird eggs. Polar bears are top of the food chain in the Arctic. They help to keep the balance o
olar bear communication P Polar bear v The polar bear or the sea/ice bear are the world's largest land predators. They can be found in the Artic, Canada, Russia, Denmark (Greenland), and Norway. v In the wild polar bears live up to age 25. v Polar bears have been known to swim 100 miles at a stretch. v Polar bears primarily eat seals. Communication v When a Polar bear wants to play, he communicates this to another bear by wagging his head from side to side. Such play sessions involve ritualised fighting or mock battles. v A mother Polar bear can comfort, protect, or punish her cubs by using her body, muzzle, or paws and scold her cubs with a low growl or a soft cuff. Communication v Among Polar bears, hissing, snorting and a lowered head signifies aggression. An attacking Polar bear will charge forward with head down and ears laid back. Submissive Polar bears always move downwind of dominant bears. Sight v A Polar bear's ey
Tundra Tundra is the world's youngest biome. It was formed 10 000 years ago. Located at latitudes 55° to 70° North. Almost all tundras are located in the Northern Hemisphere, encircling arctic desert and extending south to the coniferous forests of the taiga. The ecotone (ecological boundary region) between the tundra and the forest is known as the tree line or timberline. Tundra comes from the Finnish word tunturi, meaning treeless plain. It is noted for its frost-moulded landscapes, extremely low temperatures, little precipitation, poor nutrients, and short growing seasons. Dead organic material functions as a nutrient pool. The two major nutrients are nitrogen and phosphorus. Nitrogen is created by biological fixation, and phosphorus is created by precipitation. The most distinctive characteristic of tundra soil is its permafrost, a permanently frozen layer of ground. The average winter temperature is -28°C, but the average summer temperature is 3-16°C. During the brief summ
Polar Bear Kristjan Paal 6.c The polar bear (Ursus maritimus) is a bear native largely within the Arctic Circle encompassing the Arctic Ocean, its surrounding seas and surrounding land masses. It is the world's largest land carnivore and also the largest bear, together with the omnivorous Kodiak bear, which is approximately the same size. A boar (adult male) weighs around 350 700 kg (7701,500 l while a sow (adult female) is about half that size. Although it is closely related to the brown bear, it has evolved to occupy a narrower ecological niche, with many body characteristics adapted for cold temperatures, for moving across snow, ice, and open water, and for hunting the seals which make up most of its diet. Although most polar bears are born on land, they spend most of their time at sea. Their scientific name means "maritime bear, and derives from this fact. Polar bears can hunt their preferred food of seals from the edge
Sun Bear The Sun Bear is 120-150 cm long, making it the smallest member in the bear family. Males tend to be 10-45% larger than females the former normally weigh between 30 and 70 kg , and the latter between 20 and 40 kg. The shoulder height is about 60-72cm .The Sun Bear possesses sickle-shaped claws that are relatively light in weight. It has large paws with naked soles, probably to assist in climbing. Its inward-turned feet make the bear's walk pigeon toed, but it is an excellent climber. It has small, round ears and a stout snout. The tail is 1.2-2.8 inches (3-7 cm) long. Despite its small size, the Sun Bear possesses a very long, slender tongue, ranging from 8 to 10 inches (20-25 cm) in length. The bear uses it to extract honey from beehives. Unlike other bears, the Sun Bear's fur is short and sleek. This adaptation is probably due to the lowland climates it inhabits. Dark black or brown-black fur covers its body, except on the chest, wher
Wildlife of Alaska. Triin Õismaa Brown bear. Most widely distributed. Cubs birth. Extremely fast. Range in colours. Cubs can climb. Male bear's heavier. Poor eyesight. Black bear. Seen in different shades. Shy, easy to frighten, curious. Good climbers and swimmers. Live over 25 years. Good hearing, sense of smell. Polar bear. Only humans prey or hunt. Fur is not white. Tend to overheat more. Can swim up to 100 miles (161 km). Cubs learn to freeze. Caribou. Covered with winter coat. Wear antlers. Releases special scent when faced with danger. Live about 4,5 years. Very fast. Moose. Largest members of the deer family. Good sense of smell and hearing. Lives about 1525 years. "Twig eater." Can run up to 56 km. Very good swimmers. Mountain goat. Goatantelopes. Thick white fur (double coat). In spring they rub their body against the rocks. Offers various sounds. Lives about 1215 years. Bison. Largest North Ameri
annaabi.ee 
Sisene Facebook'ga
Sisene Google'ga
Sisene LinkedIn'ga
Kõik kommentaarid