Origin of the species
Initially it was assumed that the polar bear separated from brown about 45-150 thousand years ago, probably in the territory of modern Ireland. However , a recent study showed that the polar bear separated from their common ancestor with brown bear 338-934 thousand years ago ( an average of 600 thousand years ago) , and 100-120 thousand years ago by crossing species representatives took their hybridization , resulting in all modern polar bears are descended from these hybrids .Appearance
Head bears. From left to right : Brown , Black, White .Polar bear - one of the largest terrestrial carnivorous mammals of Representatives . Its length is 3 m , weight up to 1 ton Usually males weigh 400-450 kg , body length of 200-250 cm, height at the withers 130-150 cm Females noticeably smaller ( 200-300 kg). The smallest bears are found on Spitsbergen , the largest - in the Bering Sea .Polar bear from other bears distinguish long neck and flat head . His skin is black. Fur color varies from white to yellowish ; summer fur may turn yellow due to constant exposure to sunlight . Polar bear fur is devoid of pigment stains, and hollow hairs . Translucent hairs allows only ultraviolet rays, giving the coat insulating properties . When ultraviolet photography polar bear seems dark . Due to the structure of the polar bear hairs can sometimes " go green ." It happens in a hot climate ( in zoos ) , when inside hairs infest microscopic algae .<span>Soles of the feet are hit wool, not to slip on the ice and not freeze. Between the fingers has a flipper and the front paws trimmed stiff bristles. Large claws can keep even a strong prey.</span>
1) I'd like to know when they are leaving in Moscow
2)I'd like to know why ha is happy
3)I'd like to know who is coming by the 9 o'clock train
4)I'd like to know where he does medicine
5)I'd like to know how they can answer this question
6)I'd like to know what they are enjoy doing
7)I'd like to know which language you speak-English or French
There are four seasons in a year.
Present.S. We often go to the cinema.
Rast. S. Yesterday i met my cousin.
Present. C. I am doing my homework now.
Past. C. My mother was prepaing dinner when I came home.
Mike and Kim live in the flat in the centre of London.
Mike likes London but he thinks it is expensive.
They listen to a lot of rock music.
Mike and Kim like to go out in their free time.
They watch TV a lot but they don't go to the cinema.
<span>Kim's brother is in the band "Cool Boys."</span>