The dependent variable is the variable which can be manipulated and can affect the independent variable. The dependent variable is on the x-axis while the independent variable is placed on the y-axis. In this case, the x-axis is the number of weeks while the y-axis is the height of the plant.
Weathering can be caused by rain,snow,heat,and as well as wind.
The level most commonly meant by the term biodiversity is the species level.