Problem: How did the industrial revolution affect the population of the speckled moths?
Research:
Experiment: At bottom
C-E-R ConclusionClaim: Over time, the Industrial Revolution greatly reduced the population of the speckled moths and increased the population of the black moths
Evidence: Before the Industrial Revolution, the trees which the speckled moths rested on were white, which helped conceal the white moths and reveal the black moths. The first year’s population was 10 white moths and 8 black moths. Then the 2nd year’s population was 13 white moths to 7 black moths. The third year’s population was 17 white moths to 5 black moths. The 4th year’s population was 7 white moths to 6 black moths. During the 4th year the tides turned with the Industrial Revolution. The 5th year there was 6 white moths and 7 black moths. The 6th year, there were 5 white moths and 9 black moths. During the 7th Year, there were 4 white moths and 12 black moths. The final 8th year for the experiment, there were 2 white moths and 14 black moths left.
Reasoning: The speckled moths survived the first four years in the wild because they were concealed in the white wood of the tree. The black moths were more prone to predation. Between the 4th year and 5th year, the Industrial Revolution happened and the trees became covered in soot. This revealed the white moths and concealed the black moths in the soot covered logs. For this reason, the Industrial Revolution greatly reduced the population of the speckled moths and increased the population of the black moths.
Research:
- found in many countries such as China, Russia, Europe, and North America
- used to be very well concealed on white barked trees
- in Europe, many trees became blackened by soot, therefore resulting in the white moths being hunted more often (no concealment)
- http://en.wikipedia.org/wiki/Peppered_moth
- http://biology.clc.uc.edu/courses/bio106/nat-sel.htm
Experiment: At bottom
C-E-R ConclusionClaim: Over time, the Industrial Revolution greatly reduced the population of the speckled moths and increased the population of the black moths
Evidence: Before the Industrial Revolution, the trees which the speckled moths rested on were white, which helped conceal the white moths and reveal the black moths. The first year’s population was 10 white moths and 8 black moths. Then the 2nd year’s population was 13 white moths to 7 black moths. The third year’s population was 17 white moths to 5 black moths. The 4th year’s population was 7 white moths to 6 black moths. During the 4th year the tides turned with the Industrial Revolution. The 5th year there was 6 white moths and 7 black moths. The 6th year, there were 5 white moths and 9 black moths. During the 7th Year, there were 4 white moths and 12 black moths. The final 8th year for the experiment, there were 2 white moths and 14 black moths left.
Reasoning: The speckled moths survived the first four years in the wild because they were concealed in the white wood of the tree. The black moths were more prone to predation. Between the 4th year and 5th year, the Industrial Revolution happened and the trees became covered in soot. This revealed the white moths and concealed the black moths in the soot covered logs. For this reason, the Industrial Revolution greatly reduced the population of the speckled moths and increased the population of the black moths.