Polar bear
Polar bear:
A type of
bear found in the Arctic region, Alaska, Canada, Russia, Norway, and Greenland
and their environs.
It is also known as the white bear or northern bear .
It is considered an endangered animal.
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| Polar bear |
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There are no accurate statistics on the total number
of polar bears in the world, but some estimate its numbers at about 22,000 -
25,000, and about 60% of them live in Canada .:
The polar
bear has a superior ability to estimate depths and distances, has a strong
sense of smell, and can run at speeds of up to 55 km per hour,
All of these qualities, in addition to the white color
of the bear's scalp, which gives the ability to hide above the snow, make the
polar bear a skilled hunter .
Polar bears are
carnivores of large animals such as seals, and are prepared to live in an icy
environment,
It has five long, curved claws that help it not slip,
and it has fur cushions on the soles of the feet that help warm the feet .
The polar bear
is one of the most skilled bears in the field of swimming.
It is smaller in size than large brown bears and has a
smaller head, but its neck is longer and thinner than most other
species.
polar bear
Where polar bears live?
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His homeland :
It is
currently considered an endangered animal in the United States of America due
to the decline of its habitat due to global warming. There are recent studies
that reported that survival rates for young polar bears have decreased compared
to what they were 20 years ago, and researchers attribute the reason for the
decline in survival rates to a rise in temperature Earth, which led to the melting of large
parts of the ice masses off the coast of northern Alaska, reducing the area
where bears search for food at the edge of the ice masses .
According
to Seymour Laxon of University College London, Arctic ice thickness has shrunk
by about 40% over the past 50 years.
Most ecologists believe that shrinking ice seas
threatens the polar bear's environment .
How rare are polar bears?
Names of the bear:
There are
many names for bears in the Arabic language, including Al-Falhas, Abu Juhayna,
and Abu Qatada, and the plural of bear is bears, bears, and bears. His female is called Al-Jahbar, Al-Jahizah,
and Al-Dabbah, while his son is called Al-Jarru, Al-Dasim, and Al-Hajras, while
his voice is called Al-Sahif and Al-Qahqa.
It is called the burrow bear house.
In Arabic proverbs, a proverb is used about a bear in terms of ghee and
acumen, and it is said that he is superior or more intelligent than a bear .
Characteristics of the tiger animal
Polar bear reproduction :
The polar
bear mates every 3 years.
The male leaves the female after mating, and the
mother spends the winter in her snowy house,
She breastfeeds her young with very creamy milk that helps
them maintain warmth, and when the young are 3 months old, they leave the snowy
house with the mother in order to learn new skills,
The young remain with the mother until they are about
28 months old .
The family is separated during the second summer after birth, when the mother leaves her young to face life alone .
In
mid-2006, two American explorers (Lonnie Dupree and Ariel Larsen) traveled a
distance of 1,100 miles on foot,
Using a light boat across the Arctic Ocean to test the
depth and density of ice during the summer with a mission that lasted the
summer months in the Arctic, with the aim of collecting information about the
habitat of the polar bear, which is considered a victim of global warming. The two explorers called their scheme the
'2006 Thin Ice Project Saving the Polar Bear' which began in Canada, then to
the North Pole and then to Greenland.
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Physical characteristics of the polar bear :
The polar
bear is the largest predatory mammal in the world, and it lives in the Arctic
regions, which are characterized by freezing temperatures, so the shape of the
polar bear develops to adapt to the cold environment in which it lives.
The most
important physical characteristics of the polar bear are the following:
The size
of a polar bear The size of a male polar bear is 3 times the size of a female,
as the weight of the male ranges from 350 kg to more than 650 kg,
While the weight of the female ranges from 150 kg to
250 kg, and her weight reaches 500 kg during pregnancy.[ 2] As for the length,
the length of the male polar bear ranges from 2.5 to 3 meters, and the length
of the female ranges from 1.8 m to 2.5 m.
It is worth noting that the largest polar bear weighed
1,002 kilograms, Its length is 3.7 metres.
Polar Bear
Color Polar bears can appear in several colors depending on the season and time
of day.
Including yellow, orange, grey, and green, and the
reason for this is that their fur is transparent and hollow,
When light falls on the outer fur, a little of it is
absorbed and the rest is scattered away.
Therefore,
the fur at sunrise is white; It disperses white daylight, and we find it gray
on a cloudy day, and at sunset it turns reddish-orange,
The different colors of their fur help them adapt and
hide in their environments.
We find
polar bears in zoos in green; They make small holes in their fur as a result of
their movement on concrete floors in cages.
Algae enter and multiply inside the bears’ fur,
turning them green.
Is polar bear called ice bear?
Polar bear limbs :
The polar
bear's body is characterized by the fact that its back part is higher than its
shoulders, because the hind limbs are longer than the front limbs, and it has
large feet that help it adapt to the icy environment in which it lives.
Its large
paws distribute its weight as it moves over the snow.
The polar bear's sole also contains skin protrusions
and hair between the fingers, to prevent it from slipping while walking.
The polar
bear has round front paws and five toes with thick, curved claws to catch prey
and enable it to climb on ice.
The head of the polar bear The head of the polar bear
is rectangular and small compared to the size of its body, and its nose is
wide, arched, and black in color.
It has 42 teeth that it uses to hunt its prey, and it
has large incisors to cut the prey’s meat into smaller pieces,
He swallows food without chewing it.
As for the
polar bear's eyes, they are close to each other, dark brown in color, and face
forward, and its ears are relatively small compared to the ears of other bears.
This is a form of adaptation to the icy environment in
which it lives.
It helps him maintain his body temperature.
What polar bear eat
Polar bear معنى
Polar bear habitat
Polar bear tail :
Polar
bears' tails are short and small, measuring 7-12 cm in length and this helps
them adapt to the icy environment.
The short tail prevents heat loss and maintains the
maximum possible warmth.
Polar bear hair :
With the
exception of its nose and footpads, the polar bear's body is covered by two
layers of fur, the thickness of the lower layer ranges from 2.5-5 cm, forming a
dense and insulating layer, covered with a thin layer of hard and shiny outer
hair,
Which reaches a length of 15 cm.
In
addition to the fact that the hair of polar bears is transparent and colored
according to the surrounding conditions, it is also characterized by being oily
and water-repellent, so it is not exposed to getting wet with water or ice at
low temperatures,
Polar bears completely replace this fur annually, in
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Polar bear cartoone, and hair loss lasts for several
weeks.
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Polar bear skin
The polar
bear's skin on the nose and foot pads appears black; It is one of his most
important means of adaptation.
It absorbs the energy of sunlight to warm its body.
The presence of fur and fat layer :
The polar
bear has a layer of fat located directly under the skin, which protects the
body from the cold, and fur that insulates moderate air between the bear and
its surrounding areas, and maintains body temperatures,
It has an oil layer that protects it from low temperatures and maintains its humidity.
Behavioral characteristics of the polar bear :
In
addition to the physical characteristics of the polar bear, it has also
developed behavioral characteristics to adapt to its
environment, and the most important behavioral
Adaptation of polar bear
Polar bear size
The polar bear is
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characteristics of the polar bear are the following:
Oscillating activity during the day: Polar bears are
at their peak activity in the first third of the day, while their activity
decreases in the last third, and the female polar bear spends 19% in the
spring% Since their time with their
cubs, they hunt seals, and about 38% in the summer, while males spend about 25%
of their time hunting in the spring, and about 40% of their time in the summer.
Polar
bears spend the rest of their time sleeping and relaxing, and when the lack of
ice prevents them from hunting seals, their sleep rate may reach 87%.
Walking and jogging :
Polar
bears can stand on their hind feet and walk straight; But for short distances,
the usual pattern of walking is on the soles of their feet, with their heels
touching the ground and their front paws swinging outward,
They also swing their heads from side to side.
Bears
walking can be described as 4 strokes, as follows: the right front foot touches
the ground, followed by the left back foot, then the left front foot, followed
by the right back foot.
Polar
bears use more than twice their energy to move at a certain speed; This is due
to their massive body building and swinging walking.
The average walking speed of a polar bear is 5.5 km/h,
and it can run at a speed of 40 km/h/ The clock is short distances to chase and
hunt prey.
polar bear
Living alone :
Polar
bears often live primarily alone, but they are found in only two social units;
The first consists of adult females with cubs.
This is the most stable social interaction between
polar bears
The second
consists of breeding pairs that mate several times, remaining together for a
week or more.
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Hibernation:
Small
mammals resort to hibernation during times when food is scarce.
They store body fat when food is abundant, to use it
during the hibernation period.
As for polar bears, they do not enter a deep
hibernation,
But females, especially pregnant women, enter a state
of inactivity, and this continues from October or November until
March or April.
polar bear
Attack on humans :
Polar
bears pose a danger to humans when they lose their habitat in sea ice, so they
shift their habitat to land areas, causing them to collide frequently with
humans, and this poses a danger to them because polar bears are large
predators.
polar bear
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Where
polar bears live:
Polar bears live in and around the Arctic, as polar
bears are
The largest whale in the world
ound in five countries:f
United States (Alaska), Canada, northern Russia,
Greenland, and Norway (Svalbard),
The life of polar bears depends on sea ice for hunting
and reproduction, as the sea is their main source of food, and the place where
they spend most of their lives.
But as sea
ice recedes away from the coast, polar bears are forced to navigate to access
vital food sources.
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