Vegetation keeps the soil intact and the dirt to become richer with more nutrients. Land with vegetation also usually has moist soil. Desert sand is not moist and has no plants to keep the soil healthy so desert sand is more prone the wind erosion
The variables in a study of a cause-and-effect relationship are called the independent and dependent variables. The independent variable is the cause. Its value is independent of other variables in your study. The dependent variable is the effect.
6H2O = six molecules of water. As we learned earlier, the glucose will be used by the plant as energy. The oxygen and water will be released back into the atmosphere to help other living things.
