The beneficial ozone layer is in this region of the atmosphere

(amoeba sisters video recap: pedigrees and need

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

When a population split into two subgroups what is most likely to cause the subgroups to develop different traits?