What is defined as the variable in a controlled experiment that is purposely changed or manipulated? PLEASE HELP!! constant
independent variable
controlled variable
dependent variable

Robert wants to know which fertilizer will work the best for his grass. what can he do to explore this inquiry?

No plagiarizing ! 6th grade work! easy and 100 compare the parts of a cell and the cell as a whole to another common nonliving system (i.e., a car, a city, describe the parts of a cell and their primary function.

The two main stages of cell division are called