A cell is 30 µm in width. Assume that the cell is cube shaped. What would be the length of the side of the cell if you wanted to double the surface area to volume ratio of the cell?

Cathy hypothesized that corn would not grow in mud. to test this hypothesis, she took corn kernels and placed 5 in mud, 3 in soil, and 2 in water. to her surprise, the kernels in the mud grew faster than the kernels in the soil. what error might have caused these unexpected results? a. wrong hypothesis b. not enough variables c. undefined control d. too many variables