Compared with its closest relative, the brown bear, the polar bear has a more elongated body build and a longer skull and nose. As predicted by Allen’s rule for a northerly animal, the legs are stocky and the ears and tail are small. However, the feet are very large to distribute load when walking on snow or thin ice and to provide propulsion when swimming; they may measure 30 cm (12 in) across in an adult.
The pads of the paws are covered with small, soft papillae (dermal bumps) which provide traction on the ice. The polar bear’s claws are short and stocky compared to those of the brown bear, perhaps to serve the former’s need to grip heavy prey and ice. The claws are deeply scooped on the underside to assist in digging in the ice of the natural habitat.
Despite a recurring Internet meme that all polar bears are left-handed, there is no scientific evidence to support this claim. Unlike the brown bear, Polar Bears in captivity are rarely overweight or particularly large, possibly as a reaction to the warm temperatures of most zoos.
No matter how many times your mother and grandmother told you not to go out in the cold because you would catch a cold or the flu, it just doesn’t work that way.
The truth is, the flu and the common cold are caused by viruses. People get sick more often in the winter because they are exposed to each other more in the winter than in the summer. When it is cold outside, people tend to stay inside and are more likely to spread germs to one another.
Also, because school is in session, kids are around each other all day and are not afraid to share their germs. With so many people in such close contact, the likelihood of passing germs is much higher when it is cold outside than when it is warm and people are outdoors.
Theres also evidence now that viruses spread more easily through dry air. When it is cold outside, the air is drier both outdoors and inside (where people have their heaters on) which may make it easier for germs to pass from one person to another. But it is not the cold weather that causes the cold, it just might make it easier to spread the virus.
Let’s think about the days of the week in English: Monday, Tuesday, Wednesday, Thursday, Friday, Saturday and Sunday. Really study these words and see if there are allusions to other words.
Take Sun-day for example: it could be referring to the Sun. Now let us look at the days of the week in Spanish: Lunes, Martes, Miercoles, Jueves, Viernes, Sabado y Domingo.
Taking our theme of the planets with the Sun in Sunday, let us see if we can find anymore “planetary” words.
Lunes comes from the word “luna” in Spanish, which means “moon”. Let’s go back to the word for Lunes in English,which if you add another “o”, spells “Moonday”!
Now Tuesday does seem to relate to any planet, but if you look at the word for that day in Spanish,”Martes”, you might see that it is similar to our fiery planet, Mars.
Miercoles, the Spanish word for Wednesday , sounds suspiciously like another planet when you say it out loud. Can you guess which one? Some people in the field of astrology say its the one that rules communication…That’s right, Mercury.
The next day, Thursday , or Jueves might require some knowledge of mythology as well as the planets. Again, saying the word out loud always helps. “Thur” can be changed into “Thor”, the fierce god of thunder, associated with the grand planet, Jupiter.
Friday does’nt sound much like a planet in English, but again the Spanish counterpart, Viernes, sounds similar to…yes, Venus.
Saturday, with an “n” inserted after the “r” undeniably turns it into another planet day.