Water is drawn upward from the roots through plant tissue to the leaves by

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

Which of the following is directly affected by the cardiovascular system?

10 15 20 time (minutes) using the graph of data from this experiment, at which point was the light source most likely removed? ob