This includes too much tillage that can lead to erosion, as well as irrigation without adequate drainage (leading to salinization). Unsustainable agriculture involves practices that can cause long-term damage to soil over time. Sustainable agriculture is the act of farming using principles of ecology, the study of relationships between organisms and their environment. She should have had a control group that did not do meditation.She should not have used a survey to measure happiness levels.She should not have stopped the experiment after 14 days.She should have had another group that did 15 minutes of meditation.Based on the results of this experiment, she concluded that doing 14 days of mediation does not make students happier.Īfter Mia presented the results to her class, her teacher told her that she made an error in designing her experiment.
The survey results showed both groups at very similar happiness levels, with Group #1 registering slightly more happiness. After the fourteenth day she gave the 40 students a survey that is designed to measure happiness levels. She asked Group #1 to do the 5 minute meditation and asked Group #2 to do the 10 minute meditation. She asked each group to use the app once a day for 14 days. She divided the 40 students into 2 groups of 20. She provided each of these students with an app that guides users through a 5, 10, or 15 minute meditation. To test her hypothesis she did an experiment with 40 students from her class. Mia believed that meditating for 14 days in a row would make students happier.