The right side of your cerebellum controls coordination on the right side of your body; the left side of your cerebellum controls coordination on the left. Diseases that damage the spinal cord and peripheral nerves that connect your cerebellum to your muscles also can cause ataxia. Ataxia causes include: Head trauma. Damage to your brain or spinal cord from a blow to your head, such as might occur in a car accident can cause acute cerebellar ataxia, which comes on suddenly. Stroke. When the blood supply to a part of your brain is interrupted or severely reduced, depriving brain tissue of oxygen and nutrients, brain cells die.
A polar bear has one of the best noses in the entire world and are well known to have an incredible sense of smell. Polar bears have been seen walking in a straight line for 32km (20 miles) to food, with only their nose to guide them. Polar bears have also sniffed out a seal ten football fields away that was hidden under 1m (3') of ice.
Brown bears and polar bears are the biggest bears. They can be over 6 feet long and can weigh from 100 to 600 pounds. Sun bears which live in southeast Asia are the smallest bears.They weigh about 100 pounds or 45 kg.ears can probably see as well as humans can. They can recognize shapes but not details at a distance, and they observe moving objects better than stationary objects. When you've got to find lots of food on the ground, sharp eyes that see color can come in handy. And that's exactly what the black bear has.