In a controlled experiment in scientific study how long it takes parachute of different sizes to fall to the ground what is the independent variable?

What is a cordon and where is it found

1) what three conditions must be present for minerals to form through natural processes? 2) why are minerals considered inorganic substances? 3) how do oxides differ from other minerals that contain oxygen atoms? 4) how is a sulfide different from a sulfate? what makes native elements unique?

What in scientific term why the salty popcorn causes this thirst