Several kinds of bears are found on Earth. Most bears are brown or black, but one type of bear, the polar bear, is white. What process led to this difference in fur color? Explain your answer.
Answers
Answer: This might be because of the process called natural selection.
Explanation:
I am sure that you might have read in heredity and evolution chapter about the change in the colour of the beetles (in 10th class ncert) . So maybe it's the same. They live in snow covered areas which is white in colour (obviously,duh!). With the white colour they could merge into their surroundings and act like rocks or something. This way they can protect themselves from their predators. So this is just a way to protect themselves which has occured due to genetic variation.
I really appreciate the question you asked. Let me know if you don't know about the reference to the beetles.
Sample Response: The process that led to this difference in fur color is natural selection. Polar bears live in the arctic, where there is snow all around. In this kind of environment, white bears blend in well with their surroundings, while brown and black bears stand out. This means that brown and black bears would be easier to spot as prey, and would not survive in an arctic environment. Since white bears are more adapted to the environment, they would survive and reproduce, creating a large population of white bears.