Seagulls prey on snails on the rocky sea coast. The snails vary in color from solid brown to brown and tan striped. The birds suck the soft snail bodies out of the shells and leave the shells behind on the rocks. Scientists picked up 500 empty shells and found that 400 of the shells were solid brown and only 100 were striped. Create a scientific explanation about what would you expect to happen to the snail population in 100 years based on your understanding of evolution, adaptations and natural selection. Include your claim, evidence and reasoning sections.