B. It provides information about why certain measurements are made in an experiment
From experience, to be able to have background research helps in the design of an experiment because it would tell you what is being measured in a experiment. Without the background information, my whole class got lost on what to do until my teacher told us what we had to measure and how we could measure the experiment.
C.
The skeletal system provides structure to the human body.
The nurse should inspect the perineum. After membrane rupture, the umbilical cord may have bulge into the vagina blocking the fetus from coming out. The perineum area should be checked to confirm that this has not happen. The checking should be done at regular interval until the baby comes out.
Human exploitation of fragile ecosystems can lead to the droughts and arid conditions characteristic of desertification. Effects include land degradation, soil erosion and sterility, and a loss of biodiversity, with huge economic costs for nations where deserts are growing.
