Based on Figure 1 and 2 in the paper by Toboada et al., write an essay to address the following questions,
•What is the hypothesis tested in this two figures? Hypothesis is an educated answer to a scientific question. Some of the results in these two figures help formulate a hypothesis that the authors tested with their experiments.
•What are the key experiments and their results?
•What is the authors’ the conclusion? Please relate this answer to the hypothesis.