nitrogen gas (N2) reacts with hydrogen gas (H2) to form ammonia gas (NH3) models of the molecules are shown which model correctly shows that the mass is conserved in reaction ​

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