The nurse teaches the parents of an infant who has had surgery to correct imperforate anus how to position the infant to prevent tension on the perineum. the nurse determines more teaching is need when the parents put the infant in which position?

The organelle pictured is found in cells of and is theorized to have once been an independent organism.

Select the correct answer. which term do biologists use to describe the average number of individuals of a species per unit area? a. carrying capacity b. population density c. minimal viable population d. survivability curve

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