Can amethyst by scrached by a nail?

In which part of your body is alcohol broken down in to gas and water? What happens to spores during the frozen storage? What size wire do you need for 30 amps breaker at 220 volts? When colloids are filtered do they leave residue? Why is venus the hottest planet in your soler system? How is global warming affecting the future of the emperor penguin in Antarctica? How do you use payment slip? What does outer rings mean? How does fertilization affect the chromosome number of a zygote? Was gondwana and laurasia formed by continental drifts or erosion or deposition or earthquakes? Enzymes work by what-? Will Volcanoes at spreading boundaries explode when they erupt.? What equation relates to the radioactive decay To energy produced? What is the best way to dispose of waste? Why would a sprinter respire anaerobically? What does liquid paraffin prevent when yeast respires sugar anarobically? Why is alcohol used in thermometers? What elements on the periodic table occur naturally? How many electrons does the heaviest naturally occurring element have? Which choice correctly pairs a protozoan with its method of locomotion?