In July 1994 the comet Shoemaker-Levy 9 collided with
the planet Jupiter, as scientists had
predicted. To be able to accurately
predict when a comet will collide with a
planet, it is essential to understand-
A. the composition of a planet's
atmosphere
B. the gravitational attraction that
exists between all bodies
C. the attraction of opposite poles of a
magnet to each other
D. the formation of comets

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.

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