pepperd+moths+natural+selection+lab

1. When the industrial revolution started the environment became polluted and the air turned gray. When that happened it was harder to find the gray colored moths because they camouflaged into the background. In our data we found that it was harder to find the white moths when we had the white background (77%) and harder to find the gray moths in the gray background (60%). When the gray moths were in the white background it was really easy to find them. at the end of the simulation the population of gray moths was 22%. And when the white moths were in the gray background it was really easy to find them too. at the end of the simulation the population of white moths was 32% 2. In the future I think all moths will be white not gray because their is no need for the gray pigment unless it camouflages into the background. People are trying to recycle and make the wold cleaner, not like the industrial revolution when pollution was filling the air. 3.The lab demonstrates natural selection because when the background turned gray it was harder to find the gray moths and when we had the white background it was harder to find the white moths. When you couldn't find, or eat the white moths when there was a white background the population of white moths went up and the population of the gray moths went down because they couldn't camouflage.