Some technologies have a number of negative effects. which is a negative out come of the technology of vertical farming a•rural farmers may lose there income tax b•the food supply would increase c•there would be less starvation in the world d•the cost of growing food would decrease

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