You have decided to study the effect of loud noise on plant growth. you put one plant in a quiet room and the other plant in your schools band hall. providing each plant with the smae amount of water is a example of

A controlled variable

Iassume the answer is 75 feet. inwards to outwards rather than outwards to inwards. probably be 75.hachures are stokes drawn in direction of the steepest slope. a series of short parallel lines drawn on a map to indicate topographic relief. it is actually called hachures on contour lines. the small marks in the center of the feature are called hachures.observe the picture attached