Ответ:

  1. Adult polar bears are taller than people.
  2. Polar bears live in cold places in the northern hemisphere.
  3. Polar bears have white fur, so they are difficult to see in the snow.
  4. Very hungry polar bears may attack people.
  5. Penguins cannot fly.
  6. Penguins eat fish, krill and small animals.
  7. Flying predators cannot see penguins against the dark snow.
  8. Penguins in many places are becoming less common.