Agood sample should be changed in the middle of your experiment to add variety guarantees your experiment has no problems expands your choices of who to study allows you to generalize results

a mother eats twice as much to support her growing fetus

limiting sugar intake in a mother with gestational diabetes, switching from diving to swimming.   depending on whether the patient is normal weight, over weight or gain will differ depending on that.

"professions for women essay. woolf means that women still have to hide behind lies, like a fake name, to have a book published. she believes the surmounting this obstacle is more difficult because women were not seen as equals in the 1930’s they were more seen as property of the husband or father."

(i know this wasn't that much so my