Why is the zebra striped?
Zebras live in grasslands. The wavy lines on a zebra's coat blend in with the waving grass surrounding it. This makes it difficult for an enemy to spot it.
It is true that the zebra's stripes are black and white, while the grass is green or yellow. However, the zebra's biggest enemy is the lion, which is colour blind. So, if the zebra stands perfectly still, a lion will not be able to make out that it is there at all.
Zebras usually travel in groups. When a zebra is travelling in a group, its stripes merge with the stripes of hundreds of others, creating confusion in a lion's mind.
The lion sees a wavy mass of stripes and doesn't know which animal to attack. So, it will charge blindly, giving the zebras an opportunity to scatter and flee.