Comets are objects in the space that is composed mainly of dust and ice. While approaching the sun, a tail grows. Comets have nucleus which represents the hard rock object. As it nears the sun, it heats up the comet causing it to vaporize. Meteors, on the other hand, are what we call "shooting stars". They are interplanetary dusts that burn up as it approaches the Earth's atmosphere.
Answer: A central nervous system stimulant
Explanation: arguably the most frequently ingested pharmacologically active substance in the world.
<span>Just look it up on answers.com
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So they can predict what happens next
I think its because its more accurate because it shows you the numbers rather than you reading the approximate temperature on a liquid thermometer
