Can someone help me fill In the 2 blanks pls (8th grade science)

Plants that have reproductive structures called cones are?

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

What advantages does a pedigree have over a written passage?