Reference no: EM133202658

7th grade Life Science - Adaptations and Population Changes

1. What was the purpose of the experiment?
2. What were the independent, dependent, and control variables in your investigation? Describe the variables for the simulation with the moths and birch trees.
3. Add a hypothesis based on observations and scientific principles. 

Experimental Methods

1. What tools did you use to collect your data?
2. Describe the procedure that you followed to conduct your experiment.

Data and Observations

1. Record your observations.

Table 1. Number of Moths in Birch Tree Simulation

Type of moth (color)	Initial number of moths	Number of moths after test 1	Number of moths after test 2	Number of moths after test 3
Pink and yellow	5
Blue and white	5
White with black spots	5
Black with white spots	5

Table 2. Number of Moths in Flower Simulation.

Type of moth (color)	Initial number of moths	Number of moths after test 1	Number of moths after test 2	Number of moths after test 3
Pink and yellow	5
Blue and white	5
White with black spots	5
Black with white spots	5

Conclusions

1. What conclusions can you draw about how natural selection leads to increases and decreases of specific traits in populations over time? Add an evidence-based claim.
2. Predict what would happen to the number of each type of moth if the pink flowers were replaced with blue ones. Explain your prediction using a cause-and-effect relationship.