Google Groups no longer supports new Usenet posts or subscriptions. Historical content remains viewable.
Dismiss

Polar Bear Polar Bear What Do You Hear Pdf Download

26 views
Skip to first unread message

Tanesha Jankoff

unread,
Dec 30, 2023, 8:19:36 PM12/30/23
to
The book is designed to help toddlers identify wild animals (from the zoo) and the noises they make. It features a polar bear, a lion, a hippopotamus, a flamingo, a zebra, a boa constrictor, an elephant, a leopard, a peacock, a walrus, a zoo keeper and some children.



polar bear polar bear what do you hear pdf download

Download Zip https://facpalfabe.blogspot.com/?uw=2wZmji






PreS-Gr 1-- In a logical sensory follow-up to Martin's and Carle's wildly successful Brown Bear, Brown Bear, What Do You See? (Holt, 1983), this dynamic duo now offers sounds. The polar bear hears a lion roaring, who hears a hippopotamus snorting, who hears a flamingo fluting (!), who hears a zebra braying, and so on through a varied list of animals. At last the zookeeper announces that he hears children roaring, snorting, fluting, etc. While the format is very similar to the previous book, Carle's trademark collages have never been more beautiful. Huge animals fill the double-page spreads, glowing with light-filled colors, sans superflouous background. Teachers will smile with delight when they see this wonderful book, and students are sure to utter the familiar request, ``Have you got another one like this one?'' --Ruth Semrau, Lovejoy School, Allen, TX


Polar bears are the largest carnivorous land mammals on Earth. They are about seven to eight feet long, measured from the nose to the tip of their very short tail. Male polar bears are much larger than the females. A large male can weigh more than 1,700 pounds, while a large female is about half that size (up to 1,000 pounds). Bears can weigh about 50 percent more after a successful hunting season than they do at the start of the next; most of this additional weight is accumulated fat. A newborn polar bear weighs only about 1.5 pounds.


Many of the polar bear's physical adaptations help it maintain body heat and deal with its icy habitat. The bear's outer layer of fur is hollow and reflects light, giving the fur a white color that helps the bear remain camouflaged. The skin under the polar bear's fur is actually black; this black is evident only on the nose. Polar bears also have a thick layer of fat below the surface of the skin, which acts as insulation on the body to trap heat. This is especially important while swimming and during the frigid Arctic winter. The bear's large size reduces the amount of surface area that's exposed to the cold per unit of body mass (pounds of flesh), which generates heat.






Most polar bears occur north of the Arctic Circle to the North Pole. There are some populations south of the Arctic Circle in the Hudson Bay of Manitoba, Canada. Polar bears live in Alaska, Canada, Russia, Greenland, and some northern islands owned by Norway, such as Svalbard.


Polar bears depend on the sea ice, which forms above the open waters where their seal prey lives. They will spend time on land when sea ice is not available (and most pregnant polar bear females make their dens on shore near the coast). Polar bears are excellent swimmers, and they travel long distances between shore and the sea ice if necessary. However, if a storm kicks up during these increasingly long swims (caused by the warming ocean), they can drown. These long swims and storms are also often difficult for cubs. During periods of ice breakup, polar bears frequently swim between floating ice islands.


Unlike other bear species, polar bears are almost exclusively meat eaters (carnivorous). They mainly eat ringed seals, but may also eat bearded seals. Polar bears hunt seals by waiting for them to come to the surface of sea ice to breathe. When the seal nears the surface, the polar bear will bite or grab the seal and pull it onto land to feed. They also eat walruses and whale carcasses. Polar bears will search out bird eggs and other food sources, but none of these are abundant enough to sustain the large body mass and dense populations of polar bears.


Another vitally important food source in most areas are seal pups that are born and live in dens in the Arctic ice. The polar bear identifies these dens by smell and other markers and pounces though the roof of the den to capture the young seals. In Hudson Bay, the availability of seal pups in the spring is increasingly limited by earlier melting of ice. In the Arctic, polar bears are at the top of the food chain; they eat everything and nothing (except native hunters) eats them.


Polar bears tend to live solitary lives except when mating, when a female raising her cubs forms a family group, or when many bears are attracted to a food source like a beached whale. Young polar bears spending the summer ashore on the Hudson Bay coast will frequently play with each other, most commonly with their siblings. Polar bears near Churchill on the coast of Hudson Bay are even known to play with chained sled dogs without killing them, which they could easily do.


In the Hudson Bay population, where the reproductive biology of polar bears has been most extensively studied, it appears that a polar bear female carrying a blastocyst must achieve a body weight of at least 490 pounds to have the blastocyst implant and start gestation. If this threshold is not achieved, the blastocyst will reabsorb, the female will continue to hunt seals all winter, attempting to be fatter a year later and able to carry off a successful pregnancy.


In the beginning of the winter, a pregnant female will dig a den in a snow bank and begin the process of gestation. Depending on the area, pregnant females may enter dens anytime between early October and December. The time of exit from dens occurs between late February and April. Most females dig their dens in a snow bank on land, but some also den on the floating sea ice. In Hudson Bay, females may dig a den in the ground instead, but they use areas where the snow will build up and provide insulation. In the middle of winter in some of the coldest places on Earth, female polar bears give birth to cubs. Litter size is most commonly two cubs, but sometimes litters can be one, three, or, very rarely, four cubs.


Female polar bears in the Hudson Bay area spend remarkable periods of time fasting, the longest known of any mammal species. This fasting period before denning and in dens averages about 180 to 186 days. In Hudson Bay, pregnant females can successfully fast for as long as 240 days. The long period of fasting makes this species especially vulnerable to environmental changes like a warming climate, which reduces the amount of time they have available to build up the fat reserves they need to survive fasting and bring off a successful pregnancy.


The conditions developing in Hudson Bay are such that females will no longer be able to birth and successfully raise a litter of cubs. When this happens, the adult bears will survive until they die of old age and the population will be doomed. Scientists are fearful that this pattern is also starting to happen in the more northern polar bear populations as the amount of Arctic ice continues to shrink.


Polar bears are in serious danger of going extinct due to climate change. In 2008, the polar bear became the first vertebrate species to be listed under the U.S. Endangered Species Act as threatened due to predicted climate change. The Secretary of Interior listed the polar bear as threatened but restricted the Endangered Species Act's protections, and thus the polar bear's future is still very much in jeopardy.


The chief threat to the polar bear is the loss of its sea ice habitat due to climate change. As suggested by its specific scientific name (Ursus maritimus), the polar bear is actually a marine mammal that spends far more time at sea than it does on land. It's on the Arctic ice that the polar bear makes its living, which is why climate change is such a serious threat to its well-being. Polar bears are being impacted by climate change in several ways.


Population sizes are decreasing: In southern portions of their range around Hudson Bay, Canada, there is no sea ice during the summer, and the polar bears must live on land until the bay freezes in the fall, when they can again hunt on the ice. While on land during the summer, these bears eat little or nothing. In just 20 years, the ice-free period in Hudson Bay has increased by an average of 20 days, cutting short polar bears' seal hunting season by nearly three weeks. The ice is freezing later in the fall, but it is the earlier spring ice melt that is especially difficult for the bears. They have a narrower time frame in which to hunt during the critical season when seal pups are born, and average bear weight has dropped by 15 percent. The bears have fewer cubs, and of the cubs they do have, the frequency of survival to adulthood is decreasing. In addition, the interval between successful litters is growing. As a result, the Hudson Bay population is down more than 20 percent. The patterns seen in Hudson Bay are beginning to occur now in more northern populations and is especially well documented on the north coast of Alaska, but appears to be the case worldwide.


Additionally, development is increasing in ocean floor exploration and offshore oil extraction in the open waters that were previously sealed by frozen ice. This brings people, disturbance, and potentially ruinous oil spills to the previously pristine Arctic polar bear habitat. Polar bears need our help and protection to ensure a long, healthy future for the species. The best way for people to help polar bears is by reducing carbon emissions and working with the National Wildlife Federation to campaign for reductions in climate change pollutants.


E.g.: Hold up the polar bear and say "polar bear, polar bear, what do you hear? Have a student seek an animal and ask them to say " I found a Snake hissing in my ear. After all the animals are found allow students to hide them and encourage them to do it again by discuss their interest each other.


Polar bears use their sense of smell to detect a carcass from nearly 20 miles away. They will happily feed on the carcasses of beluga whales, grey whales, walruses, narwhals and bowhead whales when available.

35fe9a5643



0 new messages