How do you show that kwashiorkor is caused by protein deficiency using the scientific method?

Hypothesis

Kwashiorkor is caused by protein deficiency.

Experiment

To test this hypothesis, we can conduct an experiment in which we feed two groups of children a different diet. One group will be fed a diet that is deficient in protein, while the other group will be fed a diet that is adequate in protein. We will then compare the health of the two groups of children to see if those who were fed the protein-deficient diet are more likely to develop kwashiorkor.

Results

The results of the experiment show that the children who were fed the protein-deficient diet are more likely to develop kwashiorkor than the children who were fed the adequate-protein diet. This suggests that protein deficiency is a cause of kwashiorkor.

Conclusion

Based on the results of this experiment, we can conclude that kwashiorkor is caused by protein deficiency.