Scientific Fact — Definition & Examples

You are a Food Scientist running an experiment about "healthy" vs. "unhealthy" food habits. For the experiment, you have a group of people change their eating habits from month to month. For the first month, they eat only fruit and no desserts (such as pies, cakes, etc.). For the second month, they replace all those desserts with all fruits. This pattern continues for six months.

You assess the group's overall energy levels each month. Your results are the following:

The green arrow shows an increase in energy, and the blue arrow shows a decrease in energy. After further experiments, you conclude that those with healthier eating habits, such as replacing desserts with fruit, have higher energy levels.

Now, you want to know why this is true! So, you design some experiments to figure out what's in healthy foods, such as apples.