I tried out putting chapstick on the side, erasing the side of the scantron, coloring in the bars next to the questions, etc. Scantrons have gotten so much more high tech and it's probably impossible to cheat in ways such as that.o it doesn't work! scantrons optically sense marks made on the scantron sheet and compare the marks to those on the answer key sheet. If anything, the extra marks on the scantron made by the chapstick will cause the grading machine to mark the answer as incorrect even if the answer was correct.
Snakes shed their skin to allow for further growth and to remove parasites that may have attached to their old skin. As a snake grows, its skin becomes stretched. Unlike human skin, a snake 's skin doesn't grow as the animal grows. Eventually, a snake 's skin reaches a point where further growth is not possible.
Snakes eat their prey whole and are able to consume prey three times larger than the diameter of their head because their lower jaw can separate from the upper jaw. To keep prey from escaping, snakes have rear-facing teeth that hold their prey in their mouths. Venomous snakes inject their prey with venom, while constrictors squeeze their prey. They do not need to hunt everyday. Anacondas and pythons can survive for up to a year without food after feeding. Snakes hunt mostly at night.