Joe sowed seeds of a plant in two different types of soil in separate pots. She added the same amount of fertilizer to the pots. She then placed the pots in the sun and recorded their growth after four days. What is the independent variable in the study? Duration of growth
Amount of fertilizer
Growth of seeds
Type of soil

explanation:

a fuel engine ( known as a gasoline engine in american english )is an internal combustion engine with spark ignition, designed to run on petrol (gasoline) and similar volatile fuels.

the five characteristics of adolescence are biological growth and development, and undefined status, increased decision making, increased pressure and the search of self.

the components of a vector are the parts of the vectors that are to each other.

b perpendicular