Stan examines a hair under a microscope. Which part of the hair shaft will he analyze to view overlapping scales made of keratinized cells, and which part will he examine to see spindle-shaped cells? Stan examines a hair found at the crime scene. He notes that the has overlapping scales made of keratinized cells, and that the consists of spindle-shaped cells.

emerging idea only occurs as a raw idea that could appear out of nowhere. meanwhile, to reach scientific consensus , that idea must be structured and tested over and over again through various experiments. the scientific consensus transforms the raw idea into idea that is more reliable through the process of scientific elimination.

the potatoes have high sugar concentrations and although these potatoes were different we could seethe effects that their sugar concentrations had in different environments. for example, the potatoes in sample a, were placed in pure water. this created a hypertonic environment and caused the potatoes to draw in water from its surroundings. we saw the opposite happen with the potatoes in sample b when placed in the sodium chloride solution. the potatoes in this case were in a hypotonic solution and therefore lost water to their surroundings.