What happens when animals evolve in isolation?
Have you ever wondered how polar bears came to be white? It makes perfect sense; the white bears blend into the white arctic terrain easily. That makes it difficult for their prey to see them approach, and this has allowed them to survive for millennia in the polar region. Polar bears evolved to adapt to their environment. Every species adapts through the generations to survive in its habitat, or else it faces extinction. But the whiteness of the polar bear becomes somewhat curious when you consider that, at one time, they are believed to have branched off of the brown bear family tree [source: Polar Bears International]. So how exactly did some brown bears become polar bears? Like every other species that
What happens when animals evolve in isolation? Have you ever wondered how polar bears came to be white? It makes perfect sense; the white bears blend into the white arctic terrain easily. That makes it difficult for their prey to see them approach, and this has allowed them to survive for millennia in the polar region. Polar bears evolved to adapt to their environment. Every species adapts through the generations to survive in its habitat, or else it faces extinction. But the whiteness of the polar bear becomes somewhat curious when you consider that, at one time, they are believed to have branched off of the brown bear family tree [source: Polar Bears International]. So how exactly did some brown bears bec
